easy science fair experiments for 7th grade

All Science Fair Projects

1000 science fair projects with complete instructions.

72 Science Projects for 7th Graders

Looking for engaging science fair projects for a middle school science fair? Our handpicked collection of science fair projects for 7th graders is a great place to start!

7th Grade Science Fair Project FAQ

What are some easy 7th grade science fair projects.

Each of these science fair projects are easy for seventh grade science students do. Explore how glow-in-the-dark sticks work, discover how far apart planets really are, and make your own geode crystal with borax!

Chocolate Asphalt

Making Lightning in a Pan

Glow Sticks: Temperature Effects

Geode Rock Borax Crystal

Does Cooking Deplete Vitamin C?

Solar System Scale Model on the Sidewalk

Color and Taste

Uncovering Fall Colors

Growing Mold

Carbonation and Packaging

Science fair project details right above the FAQ!

What is the best 7th grade science project ever?

We love the Fast Food Nutrition project for seventh grade science students. This project encourages students to look more closely at the nutritional value of fast food that's easily available. This project is not only a research project on fast food nutrition, but it also gives middle school students the opportunity to interview willing test subjects about their eating habits.

If you're looking for more 7th grade science projects, check out the 7th grade science fair projects at the top of this page! 

Check out more Best Science Fair Projects →

What are some cool 7th grade science fair projects?

Get ready to be amazed by these super cool science projects for 7th graders! With just a few simple materials, students fascinated by the solar system, how things glow-in-the-dark, unexpected chemical reactions and more, will have too much fun!

Glowing in the Dark

Make Plastic from Milk

The Dissolving Meat Myth

What are 5 testable questions for 7th grade?

A testable question is a question that we can answer through a science experiment. To do this, we do a control science experiment, then we change one thing in the experiment to see how it affects what happens. This is how we can discover the answer to our question!

Here are some testable questions that our seventh grade science projects investigate.

Do detergents affect plant growth?

Can drink and food taste different just by changing its color?

Does the color of light affect photosynthesis?

Does temperature affect seed sprouting?

What makes popcorn pop?

Here are more testable questions along with their science projects →

What are the top 10 science projects for 7th grade?

These are our top 10 science projects for 7th grade, covering biology, chemistry, physics and engineering. Find out how sugary drinks affect teeth, make electricity with your own body or test your design and engineering skills by making a foil bug walk on water! These projects can be used as science fair project ideas or as a fun experiment!

Hamsters and Time of Day

Plant Density and Growth Rate

Water Strider Challenge: Make a Bug Walk on Water!

Human Body Battery

Left-Handedness and Mirror Writing

Making Antibubbles

Soil as an Electrical System

Tooth Decay Experiment with Eggs

Science project details right above the FAQ!

Can I do a 7th grade science fair project in a day?

Yes! Quick experiments or making a model can be a great option for a science fair project! If you want to do a quick science fair project, we have science project ideas on various topics to get you started.

The Solar System: See it in the correct scale!

Create your own sidewalk chalk solar system model and take a walk through space! Solar System Scale Model on the Sidewalk

Chromatography reaction: Separating out colors!

Have you ever wondered why leaves change color in the fall? Let's find out by in this chemistry experiment using chromatography to separate the colors of a green leaf! Uncovering Fall Colors

Heat reactions: Heat speeds things up!

Does the temperature of a room affect how quickly a candle burns? Burn Rate of a Candle

What are some hands-on ways to find inspiration for my science fair project?

There may be free admission days or free passes to a science museum near you! Check your local library for free museum passes, nearby science museums for free entrance days and your credit card for offers.

Find a science museum near you and prepare to be awed by all that you can learn there! I always learn something new and am inspired whenever I go to a science museum!

How do I start a science fair project?

What should I do after I have a science fair project idea?

How do I make a science fair board?

What is the scientific method?

What is the engineering design process?

Where can I find a science fair competition?

The www Virtual Library: Science Fairs website also has a collection of science fairs from all over the world, as well as national, state, regional, local, and virtual competitions!

Are you seeking one-on-one college counseling and/or essay support? Limited spots are now available. Click here to learn more.

Science Fair Ideas for 7th Grade – 60 Perfect Projects

June 27, 2024

If your 7th graders are preparing for the science fair, it’s possible that you’re looking for some ideas to get them started. With these 7th grade science projects, your students will be sure to feel inspired and ready to begin. These science fair ideas for 7th grade include projects related to biology, health & psychology, environmental science, chemistry, physics, and engineering.

Things to consider – Science fair ideas for 7th grade—60 perfect projects

Each of these projects is ranked according to “difficulty” and “materials.” You can consider these rankings as you decide which to share with your 7th grade students.

Difficulty : How advanced is the project? Do your 7th graders have enough time to complete it? Each project is rated “basic,” “medium,” or “advanced” based on the complexity of the concept and the amount of time it will take.

Materials : These projects also range in terms of the complexity of the materials and setup, and are ranked as “basic,” “medium,” or “advanced.”

Biology – Science Fair Ideas for 7th Grade—60 Perfect Projects

1) extracting dna from onions.

  Can DNA be studied separately from other cell components? In this experiment, students creatively use a variety of household supplies to learn more about DNA, an important biology concept.

• Difficulty: advanced
• Materials: advanced
• Learn more: onion DNA extraction

2)  Grow box design

  Build a grow box (or series of grow boxes) for plants using cardboard, foil, and a plug-in light source. Students can test the effectiveness of the grow box when variables are changed, such as light source strength and box size. After this experiment, your students can invite plants into their homes or the classroom all winter long.

• Difficulty: medium
• Materials: medium
• Learn more: DIY grow box

3) Collect biofilm

  Biofilm is comprised of microscopic bacteria accumulating on objects in the water (you might notice it rivers, swimming pools, or even on the surface of teeth). Students can quantify biofilm by building a collector. They can also experiment with ways to reduce it.

• Learn more: biofilm experiment

Science Fair Ideas for 7th Grade – 60 Perfect Projects (Continued)

4) plants and phototropism.

  Do plants really grow towards light? Discover more about how plants respond to light through this simple experiment.

• Difficulty: basic
• Learn more: phototropism

5) Nitrogen and plants

Explore the important role of nitrogen in plant growth with this science fair project. The experiment involves comparing the growth of pea plants with and without nitrogen-fixing bacteria.

• Learn more: nitrogen and pea plants

6) Bubble cell membranes

  If you’re looking for a fun way to teach 7th graders about cell membranes, consider using bubbles. Through this lab, students investigate the behavior of bubbles and apply it to cell membrane characteristics.

• Learn more: cell membrane bubble lab

7) Test Darwin’s theory

  With this lab, students repeat Darwin’s “survival of the fittest finch” experiment for a fun and interactive way to learn about natural selection and evolution.

• Learn more: natural selection lab

8) Carbon cycle experiment

  Help your 7th graders learn about processes of photosynthesis and respiration through this project that combines biology and chemistry concepts.

• Learn more: carbon cycle experiment

9) Test for germs

  What’s the dirtiest place in the kitchen? The refrigerator handle? The coffee machine? The sink? Students can guess, though it might not be what they think. Swab household items and store the samples over several days to find out.

• Learn more: germ experiment

10) Cell size lab

  In this project, students can analyze surface-area-to-volume ratios using beets and bleach, demonstrating how small cells are more efficient at moving materials in and out.

• Learn more: cell size lab

Health and psychology – Science Fair Ideas for 7th Grade

11)  colors and memory.

  Find out how color affects memory by asking volunteers to recall simple words on differently-colored construction paper.

• Materials: basic
• Learn more: color influencing memory

12) Measuring tooth decay

  Since eggshells share similar properties to teeth, your students can use them to test how different beverages erode tooth enamel. This project teaches biology concepts while also encouraging healthy eating and dental care.

• Learn more: tooth decay egg experiment

13) Cooking and Vitamin C

  Do cooked fruits and vegetables have less Vitamin C than raw ones? This is another good experiment for your students interested in nutritional science. This project involves a slightly more complex procedure, so it’s also perfect for your advanced 7 th grade students.

• Learn more: Vitamin C determination

Science Fair Ideas for 7th Grade (Continued)

14) caffeine and typing.

  Does a jolt of caffeine help you work more efficiently? Test this out through typing with this 7 th grade science experiment. Your 7 th grade students can run this test with mild forms of caffeine, such as soda or a piece of chocolate.

• Learn more: caffeine and typing

15) Psychology and texting language

  If you teach 7 th graders, you may have heard them speaking in texting-speak. Have these texting abbreviations become a full language? With this project, your 7 th grade students can create a text-language glossary and study its practical applications.

• Learn more: is texting a new language?

16) Test calorie counts

  Where does the calorie number on packaged foods come from? Try this experiment with a variety of foods to help your students understand how food energizes us.

• Learn more: test calorie counts

17) Balloon lung capacity

  Using a balloon and a tape measurer, students can measure lung capacity, which has a number of health implications. It can be made more or less complicated depending on the measurements taken (circumference vs. volume of the balloon, for example).

• Learn more: measuring lung capacity

18) Myers-Briggs and memory

  Are your students interested in exploring questions of psychology and memory? This experiment involves asking volunteers to take a Myers-Briggs personality test, followed by a simple memory exam. They only need internet access and willing volunteers.

• Learn more: memory and personality

19) Flexibility experiment

  There are a number of reasons for stretching, including reducing chances of injury and feeling calmer. But does stretching actually make us more flexible? Find out by comparing flexibility before and after stretch exercises. Students can test volunteers after holding the stretches for different lengths of time.

• Learn more: flexibility experiment

20) Sleep and memory

  Can sleep deprivation affect memory? Your students can find out by quizzing volunteers on trivia studied beforehand after 8 or 5 hours of sleep. While this project takes some planning, organization, and willing volunteers, it’s a fun way to promote healthy sleep habits.

• Learn more: sleep and memory

Environmental science – Science Fair Ideas for 7th Grade

21) water filtration.

Create a charcoal filter in order to better understand water filtration systems. Afterwards, students discuss the science behind clean drinking water, as well as its environmental implications.

• Learn more: charcoal water purifying experiment

22) Acid rain and plant life

  Does acid rain negatively affect plants? Students can test this environmental concern using vinegar. Advanced students can also experiment with different pH levels for a more complex project.

• Learn more: acid rain experiment

23) Ocean acidification

  For another project related to acidification, students can make stimulated ocean water and test its effects on seashells.

• Learn more: ocean acidification lab

24) Test the greenhouse effect

  Though the greenhouse effect can help planet Earth to stay at a livable temperature, it also causes harmful global warming when enhanced by excess greenhouse gases. With this model, students can see the greenhouse phenomenon in action, and discuss how humans could reduce greenhouse gas emissions.

• Materials: simple
• Learn more: greenhouse effect experiment

25) Grow garbage plants

  Grow plants using different kinds of compost and garbage to see which kind of matter facilitates the quickest growth. This project is a great way to teach about composting and sustainability.

• Learn more: growing plants in garbage

26) Water cycle bags

7th grade students can learn more about the water cycle with only a Ziploc bag, food coloring, water, and a marker. Once these water cycle bags are created, they can be hung by a window and checked throughout the following days. Students can observe and record a miniature water cycle happening before their eyes. For more complexity, they can check it at different temperatures.

• Learn more: water cycle bags

27) Glacier ice-cutting

For a demonstration of how glaciers melt from pressure, try this ice-cube-cutting experiment. Mix it up by timing the process with differently sized ice-cubes and weights.

• Learn more: ice cube vs. wire

28) Water quality testing

  A simple water testing kit opens numerous possibilities for science fair projects, including testing the water quality of local streams, ponds, swimming pools, and drinking-water taps. If students don’t have water testing kits on hand, they can purchase them for under $30. This is a perfect way to teach about the importance of clean water sources.

• Learn more: water quality experiment

29) Algae growth

  Teach students about fertilizer runoff and its harmful impacts on local waterways through this experiment, which has students test the effects of pollutants on algae growth using household fertilizers.

• Learn more: algae and pollution

30) Bird watch

  Project FeederWatch is perfect for students who might take an interest in ornithology. It only involves putting a bird feeder outside and recording the number of visitors. For more complex studies, students can take on Feeder Design Challenges .

• Learn more: bird feeding with Project FeederWatch

Chemistry – Science Fair Ideas for 7th Grade

31) slime design.

  Chances are, you already know that middle school students love slime. Turn the fascination into a learning activity by experimenting with chemical properties to create the best slime.

• Learn more: how to make slime

32) Mummify a hot dog

  Students can understand the chemical processes involved in mummification by completing this simple experiment.

• Learn more: hot dog mummification

33) Eggshell chalk

Your 7th graders can make their own sidewalk chalk by using the calcium in eggshells. They can change variables (flour type, water temperature, etc.) to see which chalk is the most long-lasting or water-resistant.

• Learn more: make your own eggshell chalk

34) Homemade ice cream

  The secret to making ice cream is to lower the freezing point of ice. The secret to this secret? Salt. With this experiment, students can have delicious vanilla ice cream ready in about 20 minutes. Test different ingredients for the creamiest results.

• Learn more: homemade ice cream

35) Saltwater and density

Explore salinity by making an egg float or sink in water with various salt levels. You can base your salt levels on notorious salty bodies of water such as the Great Salt Lake (6-27% salt water) and the Dead Sea (34% salt water).

• Learn more: egg float science experiment

36) Oxidation experiment

  Ever wondered how to slow or prevent rusting? Rusting occurs through a process of oxidation, which can be slowed using different liquids. Test how saltwater, freshwater, and other liquids affect oxidation on common metal objects (paper clips, staples, coins, etc.)

• Learn more: does it rust?

37) Static water bending

  Change the flow of water just by combing your hair and then holding it next to a stream of water. How far can you bend the water by combing your hair for different lengths of time? This is a great way to help 7th graders understand static electricity.

• Learn more: bending water experiment

38) Blow bubbles

  Yes, bubble-blowing can be a science fair project. Ask your students to test how temperature affects bubble life through this fun experiment.

• Learn more: bubble life and temperature

39) Red cabbage pH indicator

  Explore chemistry by testing the pH of liquids such as vinegar, milk, and coffee. You’ll need cups and bowls, and of course, red cabbage.

• Learn more: red cabbage indicator experiment

40)  Plate coins with copper

  Create copper-plated coins by extracting copper from a solution, through processes of electrolysis and electroplating . This is a fun way to combine chemistry and electrical engineering.

• Learn more: copper plated coins

Physics Projects – Science Fair Ideas for 7th Grade

41) balloon temperature.

  Using this simple and visual balloon experiment, students can better understand how air expands when heated, a basic component of thermodynamics.

• Learn more: balloon temperature experiment

42) Floating tea bags

  To teach your students about heat and its effects on air molecules, give them this tea bag experiment. Since this project involves fire, you should make sure your students have adult supervision while conducting the experiment. It’s also great for a class demonstration.

• Learn more: floating tea bags

43) Build a parachute

  7th graders can learn about speed, velocity, and acceleration by crafting their own parachutes. They can use different bag materials to test for a smooth fall and graceful landing.

• Learn more: build a parachute

44) Solar-powered oven

Teach your students about thermal energy, reflection, and convection through this fun project. Test the oven on a warm sunny day for delicious results (s’mores).

• Learn more: build a solar oven

45) Swing a glass of water

  This is a great way for 7th graders to learn about centripetal force. The goal is to swing glasses of water over their heads without spilling the water (we recommend doing this experiment outside since it has the potential to get messy).

• Learn more: centripetal force experiment

46) Instant ice

  Through this experiment, your students can experiment with instant ice. For variations, try leaving the water in the freezer for different times, or using other liquids.

• Learn more: instant ice experiment

47) Rainbow density tower

  Teach about density using this simple project with a beautiful outcome. Once students have created their density towers, they can test the density of other objects ty tossing them in (how far will a coin sink? A peanut? An egg?)

• Learn more: density tower

48) Separate hot and cold water

  For another density-related experiment, try separating water by temperature. Students can run the test with the hotter (less density) on the bottom and colder (more density) on the top, and then vice versa.

• Learn more: separating hot and cold water

49) Physics of sound

  It turns out that sound has physical matter. Students can demonstrate this by blowing out a candle using only sound vibrations, which move through an oatmeal box.

• Learn more: discovering sound matters

50) Graphite circuit

  For another electricity-focused experiment, challenge your students to create an electrical circuit using pencil graphite. Since it involves drawing, students can put their art skills to use for a beautiful result.

• Learn more: graphite circuit

Engineering Projects – Science Fair Ideas for 7th Grade

51) pet auto-feeder.

  For a more advanced project with practical application, have your students build this automatic pet feeder. Some coding is involved, which could interest your computer-engineering-oriented students.

• Learn more: auto-feed your pet from anywhere

52) Balloon-powered car

  To help your students learn about engineering design and kinetic energy, suggest that they build a balloon car out of materials likely found around their homes. They can experiment with different wheel and balloon sizes to see how fast the car can go.

• Learn more: Newton’s balloon car

53) Build a geodesic dome

A geodesic dome is a thin-shell structure created out of triangular elements, which help it to withstand heavy loads. This experiment utilizes geometry concepts and it only requires paper and masking tape (students can play with different types of paper and tape as variables).

• Learn more: geodesic dome

54) Da Vinci’s bridge

  This bridge-building project is inspired by Leonardo da Vinci’s self-supporting wooden bridge. Your students will only need pencils and rubber bands (not to tie the pencils together, but to make sure they don’t slip). Test the bridge with different objects to see how much weight it can take.

• Learn more: Da Vinci’s bridge

55) Tensegrity structure

  Understand the mechanics of tension by making this functional floating structure that’s mind-boggling to look at. You will need string, popsicle sticks, and some patience for exact measurements.

• Learn more: anti-gravity structure

56) Make a water clock

  In this engineering project (which has been around since ancient times), students can create a clock from plastic cups, a small bell, yarn, and several other common craft items.

• Learn more:   water clock

57) Design a pinball machine

  Your 7th grade students can create functioning parts for a homemade pinball machine using objects found at home or in the classroom. They can test for speed and materials as they craft their own game.

• Learn more: homemade pinball

58) Rubber band helicopter

Students can learn about helicopter mechanics by constructing this flying and rubber-band-powered toy.

• Learn more: rubber band helicopter

59) Crash cars

This experiment involves building cars and then crash-testing them with raw eggs inside as “passengers.” What structures best protect the egg? Beware: this one could get messy.

• Learn more: car crash project

60) Build an electricity generator

  For another electrical engineering project, students can create an electric generator. Challenge them to test the generator using different materials for different results.

• Learn more: energy generator

Final thoughts – Science Fair Ideas for 7th Grade

Hopefully your 7 th grade students will find projects to get excited about from this list. For more classroom resources applicable to middle school students, we recommend the following articles:

• 124 Good Icebreaker Questions for Students/Adults
• 141 Fun, Weird, & Interesting Facts
• 102 Fun Last Day of School Activities
• 56 8 th Grade Science Fair Projects
• 100 Best Quotes About Education & Teachers
• 150 Journal Prompts for Kids, Middle & High School Students
• 151 Best Summer Jobs for Teachers
• Teacher Tools

Sarah Mininsohn

With a BA from Wesleyan University and an MFA from the University of Illinois at Urbana-Champaign, Sarah is a writer, educator, and artist. She served as a graduate instructor at the University of Illinois, a tutor at St Peter’s School in Philadelphia, and an academic writing tutor and thesis mentor at Wesleyan’s Writing Workshop.

• 2-Year Colleges
• Application Strategies
• Best Colleges by Major
• Best Colleges by State
• Big Picture
• Career & Personality Assessment
• College Essay
• College Search/Knowledge
• College Success
• Costs & Financial Aid
• Data Visualizations
• Dental School Admissions
• Extracurricular Activities
• Graduate School Admissions
• High School Success
• High Schools
• Homeschool Resources
• Law School Admissions
• Medical School Admissions
• Navigating the Admissions Process
• Online Learning
• Outdoor Adventure
• Private High School Spotlight
• Research Programs
• Summer Program Spotlight
• Summer Programs
• Test Prep Provider Spotlight

“Innovative and invaluable…use this book as your college lifeline.”

— Lynn O'Shaughnessy

Nationally Recognized College Expert

College Planning in Your Inbox

Join our information-packed monthly newsletter.

I am a... Student Student Parent Counselor Educator Other First Name Last Name Email Address Zip Code Area of Interest Business Computer Science Engineering Fine/Performing Arts Humanities Mathematics STEM Pre-Med Psychology Social Studies/Sciences Submit

• Skip to primary navigation
• Skip to secondary navigation
• Skip to main content
• Skip to primary sidebar

An Everyday Story

Baby Gifts, Kids Toys & Motherhood

• Terms of Services
• Privacy Policy

30 Ideas For 7th Grade Science Fair Projects

By Beth Roberts | Last Updated May 4, 2022

We’ve compiled some of the best seventh grade science fair projects for your convenience! These science fair project ideas for 7th graders are sure to get you inspired and ready to do go on your own amazing research. We’ve also provided a list of resources you can use at home or in the classroom that will help give you tips on how to start your project, how to present it, and how to write an awesome science fair paper.

1. Drive A Balloon-Powered Car

This is an easy to build science fair project that you can even do with your younger brothers and sisters. You will need a high-quality balloon, scissors, tape, paperclip and a ruler.

First you will want to cut off the end of the balloon just above where half of it already has a hole in it. Then thread the tape through the hole so that it is on one side and stick the paperclip through it (close to the bottom of the balloon). Now take your ruler and measure how long it is going to be. When measuring however, you have to make sure that you are going to cut past where half of your paperclip is.

2. Make A Bionic Hand

This project involves making a bionic hand out of rubber and plastic parts and will involve cutting, gluing and soldering. You will want to be careful when cutting this project as you can seriously injure yourself if you cut too close to the plastic so make a good outline before doing it. First you will want to find out how big your hand is going to be. Then draw that on the rubber sheet with a pencil (minus the thumb where it will be). Measure how long your hand is going to be from top to bottom then measure 1/4″ from all 4 sides (you want 4 measurements).

3. Do An Experiment On The Physical Properties Of Water

This seventh grade science fair project assumes you already know some things about the physical properties of water. You will want to do this experiment with a partner who also knows some things about water. First you will want to find out whether or not your partner is willing to do this experiment with you and then measure out how many 1/2 cups of water there are in a gallon. Then take a sample of that and measure it again, this time in 1/4 cups. Then you will want to find out how many 4 oz cups are in your sample, then 1 cup and then 2 cups. Now take your results and do what is called an average of those measurements in a data table like this.

4. Make A Tornado In A Bottle

This project is somewhat easy but it may take some time to get right . You will want to do this by yourself as you can be seriously injured if you do the wrong thing. First you will want to take your empty soda bottle and rinse out all of the soda from it. Then make sure there is no water left in the bottle from rinsing it then soak it in water for about 20 minutes. After your 20 minutes are up, shake the water out of the bottle, but make sure you leave enough that it will not leak out as soon as you put in your dry ice (if you use dry ice).

5. Sorting Jellybeans is a Fun way To Learn about Heredity.

Use the following pointers to sort jellybeans :

a. Jellybeans come in blue, yellow, orange and pink jellybean colors (you can use colored paper and a different color of pen)

b. Jellybeans are round (you can use a ruler)

c. The outside edge of each jellybean is the “seam” that runs down the middle of the jellybean (you will be able to see this clearly after you fill the bag) 

6. Allow A Teabag To Float In The Air

This experiment is best done outside. First you will want to take a tea bag and put it in a glass of water , then carefully place it on top of the water in the cup. Make sure there is plenty of room between the cup and the tea bag (this will allow for air to circulate and help it to float). Watch as your teabag floats in mid-air!

7. Make A Slime Bomb

This science fair project is best done with an adult or older kid . You will want to find out what chemicals to use for the slime (you can search the internet for that) and then make it. It is best if you have a friend who knows how to make slime with you, too!

8. Build A Mini Catapult And Launch Yourself Across The Room

This science fair project can be fun , but it does take some time to get right. You will need several objects to build a mini catapult out of: a small stick, tape, string, paperclips and cans (for launching).

9. Make A Vacuum Cleaner Powered Fan

This science fair project is fun , but it can be dangerous. You will want to do this in an area where you do not have many dangerous electrical cords nearby and make sure you can easily get out of the way if it starts to fly off the ground. You will need a fan, a handheld vacuum, scissors and paperclips. First you will want to take apart your handheld vacuum and find the blade part of it. You will want to cut out about 1/2″ of the rubber around the blade. Then tape that on one side of your fan (make sure you have 2 blades facing each other).

10. Make A Solar Oven Design.

Students explore thermal energy, reflection, convection, and other physics principles as they experiment with the best way to create a solar oven . They’ll be able to serve up their experiment findings as well as their final reports!

11. Make A Rocket Powered By Dry Ice.

This is a science fair project that is best accompanied with someone who has done this before. You will want to make sure you are in an open area where you can easily get out of the way if it does not work.

First you will want to use a craft knife to cut out the bottom part of a soda bottle, making sure that you leave about 1/4″ on the bottom so it does not leak. About halfway up you will want to then cut off another part (this will be used for your air intake) and make sure your intake side is smaller than your exhaust side. Cut as close as possible so that they are seamless together.

12. Make Your Own Lava Lamp

This is a fun science fair project that involves melting wax and oil together . You will want to make sure you have something to put this in (a bottle, jar or plastic cup would work). You will need: red food coloring, water, dish detergent, oil (olive or vegetable), and that small globe from a lava lamp you might have lying around the house.

13. Take A Look At How The Greenhouse Effect Works.

The greenhouse effect is a natural phenomenon that can be observed in the Earth’s atmosphere on a daily basis. Many people are unaware of how it works and how much it affects our lives. This project encourages students to gain a better understanding of the greenhouse effect and its impact on Earth’s temperature.

14. Use Water Color To Make Your Own Kaleidoscope

You can use a permanent marker, paint or crayon. By varying the size and shape of the dots, you can create many different patterns in your result. Study how light is reflected in two and three dimensions of the pattern.

15. A Dense Rainbow Is Awe-Inspiring.

Density is the same as mass divided by volume . It is a measure of how tightly packed together molecules of matter are. This project forces students to learn about density in order to obtain a rainbow of monochromatic liquids in graduated cylinders that vary in size. The light source and liquid arrangement allows them to observe the density spectrum of each liquid.

16. Use Charcoal To Purify Water.

Water is one of the most important substances on Earth . It keeps us alive, purifies us and is also used to grow crops. Many people do not have access to clean drinking water and this project will help them by guiding them in the creation and use of charcoal for use in a filter for water purification.

17. Find Out How Energy Is Transformed.

Energy can be transformed from one form to another , but often loses some of its original properties. This project highlights the effects on a car battery if it is connected to a series of light bulbs and a conducting wire.

18. Make Your Own Tesla Coil.

Invented by Nikola Tesla in 1891, the Tesla Coil is an electrical resonant transformer circuit capable of producing extremely high voltages using an air-core transformer based on two spark gaps and two capacitors that allow alternating current through the primary coil to build up an oscillating high voltage in the secondary coil without requiring any type of power source with wires directly attached to it like you would find in conventional coils.

19. Coat Some Coins With Copper.

Copper-plating gives a metallic luster and color to many things , such as coins, jewelry, and even small kitchen utensils. In this project, students will use copper sulphate solution to convert a penny into a shiny plated coin.

20. Play With Hydraulics To See What You Can Come Up With.

Hydraulics is the study of fluids at rest or in motion and the mechanical devices that are directed by them. This project will allow students to learn about how pressure and force can be used to create movement and power.

21. Biofilms Should Be Collected And Managed.

Biofilms are naturally occurring communities of microorganisms , usually bacteria but also fungi and algae cells. Biofilms are found in almost all natural environments and on most man-made surfaces. They consist of living microbes that can persist for long periods, while producing tranquil points which may be as much as 100 times greater than their own area. This project introduces students to biofilms in order to encourage them to observe how they grow and how they are treated during the experiments.

22. Using Experiment Kits On Baking Soda And Vinegar, Make A Volcano.

An erupting volcano is an impressive sight to many people , but they are also extremely dangerous! In this experiment, students will learn about what causes volcanoes to erupt and what type of rocks are needed to build them with their own hands.

23. Crystals Are Fun To Grow And Play With.

Crystals are beautiful, fascinating and useful . Students will learn about how crystals grow by experiencing it themselves and observing the different ways they can form, with the help of a variety of experiment kits. This is a hands-on science experiment that encourages students to be creative, experience sensory impact and develop an intuitive understanding of materials as they work with them in real time.

24. Explore The Laws Of Motion Using A Spinner.

Gyroscopes are used in many aspects of our everyday lives . You know them as small spinning wheels that come with every electronic device nowadays, but their uses extend from guiding missiles and rockets in flight, to balancing boats and planes, to keeping your computer monitor from falling over on its side.

25. Make A Simple Breadboard To Use A Battery And Then Attach LEDs.

A breadboard is a board which allows you to connect multiple electronic components on one side . This project uses simple components to demonstrate the use of electricity in real time. You will need some type of battery and some LEDs, but you can buy these items at a local hardware store in addition to assembling the parts yourself.

26. Make A Simple Musical Instrument Using Simple Items.

A musical instrument is any object that is used to make music . In this project, students will use an empty plastic water bottle and some chopsticks to make a simple musical instrument; they will explore the laws of vibration by experimenting with a variety of sounds.

27. Make A Paper Airplane Which Can Fly.

A paper airplane is an aircraft designed to fly by being thrown . There are many variations of paper airplanes, but they all rely on the same basic structure and usually only require a piece of paper or thin cardboard. In this project, students will learn about aerodynamics as they build their own paper airplane.

28. Build A Storage Bin Using Recycled Materials

Storage bins are used to store clothing or other things that you do not need to use regularly but still want to keep around. This project will help students learn about the different shapes of storage bins and the ability they have to store things while being used in real time.

29. Make A Simple Compass.

A compass is a tool used to measure direction and orientation . It is used for navigation and orienteering. This project will help students explore the earth’s magnetic field using simple materials to create their own homemade compass.

30. Make A Rock Tumbler And Use It To Polish Rocks.

Polishing can be a valuable skill that provides aesthetic value and shiny, smooth surfaces for your household items. In this experiment, students will explore various sources for polishing rocks, as well as using their own creativity to create dazzling results in real-time during the experiment itself.

The field of science is vast and varied, with many different types of projects that students can engage in to learn about the world around them. Science projects can be engaging for students and teachers alike if they are designed to provoke a level of interest and excitement about what students are learning. It is also important to consider that science is not only limited to the four corners of a book or classroom; it is all around us, literally everywhere!

This means that there may be opportunities for children to learn while they are waiting in line at the bank, watching television at home, or even while they are otherwise being entertained.

At many middle schools and junior high schools, the annual Science Fair is the highlight of the school year. Help your 7th grader select the best science fair idea, then step back and watch your scientist shine!

In this post, we’ve assembled 17 great science fair project ideas for 7th grade. We link each project description to its original source, where you can get more information and step-by-step instructions.

Science Fair Projects on Earthquakes

This site offers several different project ideas related to earthquakes. There are links available for additional information.

Recommended for Grades 7-8.

Source: www.earthquake.usgs.gov

The Science of Fingerprints by Leonard Bloch

Fingerprints offer a fun way to explore the science of forensics. This site offers some basic experiments and then takes the student on a “Crime scene” investigation using their fingerprint knowledge.

Source: www.fun-science-project-ideas.com

Gender Difference in Resting Pulse Rate of 7 th Graders

This experiment tested to see if gender made a difference in resting heart rates. Follow the scientist’s experiments to see what you conclude.

Source:  www.sciencefair-projects.org

Do Humans Have a Blind Spot?

This experiment will test if humans have a blind spot in their vision and how to find it.

Source: www.exploratorium.edu

Correlation between ring finger length and athletic ability

Does the length of your ring finger determine how accomplished of an athlete you are? This project guides you through the steps to find out.

Recommended for Grades 6-7.

Source:  www.all-science-fair-projects.com

The Mechanics of Carnival Games

This site gives you the background and instructions for answering this age old carnival question…..Why are the “simple” games at carnivals so hard to win?

Source: www.sciencebuddies.com

Metal Conductivity

Discover which metals are best for a pot or a handle on the pot. This site guides you through the process of scientific discovery.

Source: www.hometrainingtools.com

Taste and Smell

This experiment tests the relationship between taste and smell. The site offers great guidelines, links for research and much more.

Recommended for Grades 6-8.

Source: www.sciencefair.math.iit.edu

Does Chewing Gum Make You Smarter?

This will test the theory that chewing gum will help you perform better on tests and other mental challenges.

Recommended for grades 6-8.

Source:  www.education.com

Which Gear Gives the Best Performance in a Kart Race?

These two scientists give you all of their tips to reproduce this experiment on your own to determine who will win your race.

Source: www.pbskids.org

How to Power a Radio with Solar Power

Learn how to power up a radio using the power of the sun!

Source:  www.makeitsolar.com

The Science of Tsunamis

Find out what effect the water depth has on a wave’s velocity.

Recommended for Grade 6-8.

Source: www.sciencebuddies.co

Cleaning Coins

This project explores the effectiveness of various cleaning solutions in cleaning tarnished and oxidized coins.

Source: www.education.com

Is There Chemical Contamination in Your Stream or Creek?

Using lettuce as a bioassay, students can test the quality of water. Check out these experiments for your science fair project.

Source: www.ars.usda.gov

Solar Cell Power Output vs Temperature

In this project you will build a simple circuit and experimental setup to investigate whether the power output of a solar cell changes with ambient temperature.

Source: www.sciencebuddies.org

Does Music have an Effect on Biological Systems?

This experiment will help to determine if music has an effect on the growth rate of vegetation.

Recommended for grades 7-8.

Source: www.cool-science-projects.com

Exploring Skyscraper Design with Legos

Can you determine the best design for a skyscraper? Test out your hypotheses using Legos.

Source: www.mpmideas.com

50 Best 7th Grade Science Fair Projects and Classroom Activities

Engage every student with these 7th grade science fair projects, whether they’re interested in biology, chemistry, physics, environmental science, or any other discipline. Plus, find interesting classroom demos, experiments, and hands-on activities to spice up your lesson plans!

To make it easier to find classroom activities or science fair ideas for 7th grade, we’ve rated all the projects by difficulty and the materials needed:

Difficulty:

• Easy: Low or no-prep experiments you can do pretty much anytime
• Medium: These take a little more setup or a longer time to complete
• Advanced: Experiments like these take a fairly big commitment of time or effort
• Basic: Simple items you probably already have around the house
• Medium: Items that you might not already have but are easy to get your hands on
• Advanced: These require specialized or more expensive supplies to complete

Biology and Ecology Science Fair Ideas for 7th Grade

Want to learn more about animals or human behavior, the environment around you, or other life science topics? Try these 7th grade science fair projects.

Learn whether color affects memory

Difficulty: Easy / Materials: Medium

Can certain colors improve your memory? This experiment explores that idea using different text, background colors, and blue light settings on devices.

Learn more: Colors and Memory at Education.com

Explore how sugary drinks affect teeth

The calcium content of eggshells makes them a great stand-in for teeth. In this experiment, students use eggs to determine how soda and juice stain the teeth and wear down the enamel. (Bonus: Have students try different toothpaste and toothbrush combinations to see how effective they are.)

Learn more: Eggshell Experiment at Feels Like Home

Extract DNA from an onion

Difficulty: Medium / Materials: Medium

Learn how to extract DNA from an onion (most of what you need you can find at home, and you can get 95% ethanol at Amazon ). Then, turn it into an experiment by applying the theory to other fruits or vegetables to see if you can get similar results.

Stretch your mind with a flexibility experiment

Difficulty: Medium / Materials: Basic

Find out how important stretching really is by comparing the flexibility of willing test subjects before and after stretch exercises. This is a great experiment for fitness fans.

Learn more: Flexibility Experiment at We Have Kids

Construct a DIY grow box

Design a grow box using a cardboard box, foil, and a plug-in light socket . Then, use it for all kinds of plant-based science fair ideas for 7th grade students.

Learn more: DIY Grow Box at Uplifting Mayhem

Collect and control biofilm

Bacteria that accumulate on objects in the water form a substance called biofilm. In this 7th grade science fair project, students build an apparatus to collect biofilm and then experiment with ways to reduce the amount of biofilm that accumulates over time.

Learn more: Biofilm Experiment at The Homeschool Scientist

See if caffeine helps you type faster

People seek out a jolt of caffeine when they’re feeling sluggish, but does it really help them perform better? This 7th grade science fair project tasks students with answering that question using the scientific method.

Find out if all plants are phototropic

You probably already know that many plants grow toward the light. But do all of them respond in the same way? Test several types of plants to find out.

Devise a water filtration system

Plenty of homes use water filtration systems these days, but how do they really work? This chemistry experiment explores how charcoal filters impurities from drinking water.

Learn more: Water Filtration at The Homeschool Scientist

Determine whether text abbreviations are a new language

Kids are fluent in text-speak, but does it really count as a whole new language? In this 7th grade science fair project, students research language and the history of texting, then compile a texting glossary and consider texting’s practical applications.

Learn more: Text Language at Education.com

Chemistry Science Fair Ideas for 7th Grade

If you’re fascinated by test tubes, beakers, and Bunsen burners, check out these interesting 7th grade science fair projects and ideas.

Design your own slime

Chances are good your students already love making and playing with slime. Turn the fun into an experiment by changing the ingredients to create slime with a variety of properties, from magnetic to glow-in-the-dark!

Copper-plate some coins

Students need just a few simple supplies to perform electroplating, but the results are always impressive. (Get copper strips  and 9V battery snap connectors with alligator clips on Amazon.) Turn this into a 7th grade science fair project by changing up the variables (does temperature matter?) or items being electroplated.

Learn more: Electroplating at KiwiCo

Swab and test for germs

Germ experiments are one of the most popular science fair ideas for 7th grade students. Swab household items, school supplies, and more to discover what’s living on the items around you.

Learn more: Germ Experiment at Angelic Scalliwags

Spherify your favorite beverage

Spherification is a hot trend in top restaurants, but 7th grade science students can easily replicate it at home with a spherification kit . This is a cool chemistry experiment, and tasty too!

Test calorie counts in packaged foods

Ever wonder how scientists determine how many calories are in your food? Try this experiment to find out!

Explore mummification

First, learn how to mummify a hot dog using baking soda as a desiccant. Then, experiment with other desiccants or items to turn this into a bona fide experiment.

Play around with oxidation

Can you find a way to slow or prevent oxidation (rusting)? This is one of those 7th grade science fair ideas that’s simple in concept but has lots of practical applications.

Learn more: Oxidation Experiment at Teach Beside Me

Blow hot or cold bubbles

Blowing bubbles may sound like too much fun for a science project, but when conditions like temperature are altered, the experimental part kicks in. What conditions do you need to blow a bubble that freezes?

Learn more:  Bubble Life & Temperature at ThoughtCo.

Whip up some eggshell chalk

Use the calcium in eggshells to make your own sidewalk chalk. Then, tinker with the recipe to see if you can make the chalk last longer, resist water, or other variables.

Learn more: DIY Chalk at Kidspot

See the effect of acid rain on plants

Difficulty: Easy / Materials: Basic

This simple project tests whether acid rain has any effect on plant life, using vinegar in place of fossil fuels. Experiment with different acid concentrations and pH levels for a more advanced version.

Learn more: Acid Rain Experiment at STEAM Powered Family

Physics and Engineering Science Fair Ideas for 7th Grade

Explore the laws of motion, the science of energy, or STEM challenge engineering ideas through 7th grade science fair projects like these.

Drive a balloon-powered car

Engineer a balloon-powered car using basic materials from around the house (even the wheels are bottle caps!). Experiment to see how far or fast you can make the car go.

Learn more: Balloon Car at Prolab

Construct a geodesic dome

Budding engineers will love designing, building, and testing the strength of the fascinating geodesic dome. This experiment requires nothing more than newspaper and masking tape!

Design a solar oven

Students experiment with the best way to build a solar oven, exploring thermal energy, reflection, convection, and other physics concepts. They can serve up their experiment results along with their final reports!

Learn more: Solar Oven at Children’s Science Center

Lend a helping hand

This is a great individual or group 7th grade science project, as it encourages students to use and hone their design and engineering skills to make a working model of a hand. If you’ve got robotics skills, take this project to a more advanced level.

Build a Da Vinci bridge

There are plenty of bridge-building experiments out there, but this one is unique. It’s inspired by Leonardo da Vinci’s 500-year-old self-supporting wooden bridge. Build a model and test the amount of weight it can hold, or craft a full-size version to put Da Vinci’s plan into action.

Construct a water clock

You’ll blow your 7th grade science students’ minds when you tell them they’re going to build a clock using engineering that’s been around for thousands of years. The supplies are simple, but the results are pretty neat!

Learn more: Water Clock at STEAM Powered Family

Generate electricity

In this science fair project, kids build a generator from scratch. Turn it into an experiment by varying the materials to see if you can increase the amount of energy it produces.

Test the elasticity of balloons

Explore whether heat and cold have an effect on elasticity using balloons. Try this with other materials too to expand the project. ( Find more balloon science here! )

Freeze water in an instant

Explore the concept of nucleation (the process of chain reactions) by turning water into ice in seconds! Make this a 7th grade science fair project by trying the same process with other liquids.

Auto-feed your pet

Difficulty: Advanced / Materials: Advanced

Can you build a device that feeds your pets automatically? Even better, can you make it inexpensive and easy for others to build too? This project has real practical applications.

7th Grade Science Classroom Demos, Experiments, and Hands-On Activities

Use these classroom activities to teach human biology, mechanical engineering, and more physics and chemistry concepts in engaging and exciting ways.

Use Oreos to teach mitosis

A 7th grade science activity that doubles as a sweet treat? Your students are going to love this activity using Oreo cookies and colorful sprinkles to make cellular mitosis models.

Learn more: Oreo Mitosis at Ballin With Balling

Twist pipe cleaners to explore meiosis

Meiosis is similar to mitosis, but it’s specific to the production of gametes. These hands-on models use basic materials like pipe cleaners and beads to make the process easier to visualize.

Learn more: Meiosis Models at Science Prof Online

Teach about “Homer-o-stasis”

Difficulty: Medium / Materials: Advanced

This is such a fun way to teach kids about the concept of homeostasis! Get all the instructions you need at the link.

Learn more: Homer-o-stasis at The Trendy Science Teacher

Sort jelly beans to learn genetics

If you’re learning about how genetic traits are passed along from parent to child, try this jelly-bean demo. When you’re finished, you can enjoy a sweet treat!

Learn more: Jelly Bean Genetics at The Owl Teacher

Design a pinball machine

Give your class basic supplies like rubber bands, plastic cups, and cardboard boxes. Then challenge them to create their very own pinball machines!

Learn more: Pinball STEM Challenge at Student Savvy

Conduct a carbon cycle lab activity

If you’ve got access to some basic chemicals, conduct this lab that helps students see the carbon cycle in action using their own breath.

Learn more: Science Lessons That Rock

Make a tea bag float on air

This easy experiment is a cool way to show kids how heat affects air molecules, making hot air rise. They’ll need some supervision with the fire, so try this out on the playground for extra safety.

Learn more: Floating Tea Bags at Coffee Cups and Crayons

Learn how salt affects density

Explore the salinity of various bodies of water, then re-create their waters to see if you can make an egg float or sink. Experiment with other objects too.

Learn more: Saltwater Density at Uplifting Mayhem

Watch the greenhouse effect in action

Climate change can be a contentious topic, so start by teaching kids about the greenhouse effect, which is easy to see and understand. Then, urge them to explore data collected by other scientists so they can learn to make informed decisions about topics like global warming.

Learn more: Greenhouse Effect at Teaching Science With Lynda

Blow bubbles to explore cell membranes

Kids are never too old to enjoy bubbles, so use them to learn more about cell membranes in this fun 7th grade science activity.

Learn more: Cell Membrane Bubbles at The Trendy Science Teacher

Marvel at a density rainbow

We learn early on that oil floats on water, but where do other liquids fit in? Students find out when they conduct this colorful density experiment that has them layer different substances, making a rainbow.

Ride the wave (machine)

Learning about wave action? Build this surprisingly easy wave machine for hands-on exploration.

Learn more: Wave Machine at Engaging Science Labs

Create a taxonomy system

Students can step into Linnaeus’ shoes by creating their own system of taxonomy using a handful of different dried beans. This is a fun 7th grade science project to do in groups, so students can see the differences between each group’s system.

Learn more: Taxonomy Project at Our Journey Westward

Bake an edible cell model

Sure, students could build a cell model out of clay, but cake and candy are so much more delicious! Check out the link below to see how one teacher does it.

Learn more: Edible Cell Model at Weird Unsocialized Homeschooling

Swing a glass of water

This classic science experiment teaches kids about centripetal force. Be forewarned: This could potentially make a bit of a mess, so consider taking this one outside.

Simulate natural selection with a lab activity

Travel to the Galápagos Islands and follow in Darwin’s footsteps as students explore finch beak adaptations in this clever natural selection lab.

Learn more: Natural Selection Lab at Teach To Serve

Participate in Project FeederWatch

Citizen science projects bring science to life for kids! One of our favorites is Project FeederWatch, where kids put out bird feeders and then count and report on their visitors. This is a great way to build a love of birding for life.

Learn more: Classroom Resources at Project FeederWatch

Experiment with basic substances to learn about chemical change

If you’re introducing lab work and chemistry basics to 7th graders, this easy lab is a great way to do it. They’ll learn safety procedures and get to feel like “real” scientists as they pour, mix, swirl, and more.

Learn more: Chemical Change Lab at Super Sass and Science Class

Assemble an edible DNA model

DNA models are always more fun when you can snack on them afterwards. Want to make this a healthier activity? Use fruits and veggies to make models instead.

Learn more: Edible DNA Model at Hess UnAcademy

Craft a food web marble maze

Combine a STEM challenge with learning about food webs in this clever project. Kids will love the hands-on aspect, and it will really help the learning stick.

Learn more: Food Web Marble Maze at Teach Savvy

Keep the STEM learning going with these 15 Items All Middle School Math Classrooms Need .

Plus if you like these 7th grade science fair projects, sign up for our newsletters and get all the latest teacher tips and ideas, straight to your inbox.

Source link

20 Digital Assessment Tools for Teachers (Formative & Summative)

This teacher uses ’90s pop culture to highlight the challenges of teaching in 2024, you may also like, how to do goal setting with your students..., zones of regulation activities to help kids manage..., reimagine your end-of-year awards assembly, istelive 24 editor picks: our favorite new tools, help i keep getting mandatory summer pd piled..., 50+ conclusion sentence starters (plus a free printable), 300 fun icebreaker questions for kids and teens, this canva hack for teachers can shave hours..., free iep template (fully editable and printable), 35 fun name games to try with your....

• Earth Science
• Physics & Engineering
• Science Kits
• Microscopes
• Science Curriculum and Kits
• About Home Science Tools

Science Projects > Science Fair Projects for 7th Graders  

Science Fair Projects for 7th Graders

Science fair projects for 7th graders​​.

Science fair projects for 7th graders are a step up in complexity. Because 7th graders have a better grasp of science concepts, they’re expected to practice the scientific method in the way they approach their experiments–which includes starting with a hypothesis and then conducting processes to prove or disprove it. 

Of course, just because these science fair projects are a bit more challenging doesn’t mean that they can’t still be fun! Home Science Tools’ science kits are designed to help kids learn important science lessons through easy-to-do and enjoyable experiments. Here are some easy science fair projects for kids to explore:

Potato Battery

There are many different types of batteries, but all of them generate electricity in the same way–through a chemical reaction. This chemical reaction typically happens between two pieces of metal (electrodes) and a liquid or paste (electrolyte). Potatoes contain a lot of moisture, and this moisture works very well as an electrolyte. This means that when you add some metal electrodes to the root crop, you can create a potato battery!

Creating a potato battery will require some tools you won’t typically have in the house, such as electrodes and a multimeter. Home Science Tools’ Veggie Power Battery Kit for Science Buddies gives you everything you need to make this science fair project work! Once you have your battery, you can have fun with some science project name suggestions for the spud.

Rainbow Fire

With Home Science Tools’ Rainbow Fire Kit for Science Buddies, your child can find out how different chemical compounds react with fire and how these reactions emit different colors. Besides the lesson on chemical reactions, this kit also touches on some astronomy. Astronomers actually determine the atomic composition of different stars by measuring the spectrum of light they emit!

Bacteria Colonies

Bacteria grow all around us, and it’s fun to find out just how much of it exists in everyday items. With Home Science Tools’ Bacteria Growing Kit for Science Buddies, your student can culture their own microbe colony from bacteria swabbed from everyday household items. 

They can explore bacteria on their hands, from their phones, or on the kitchen counter, and learn how to isolate and grow bacteria colonies. Some science fair project ideas include comparing which household surface contains the most germs or checking if a pet’s mouth is dirtier than its owner’s!

Crystal Radio

A crystal radio is the simplest type of radio receiver as it doesn’t need any external power; instead, it only uses sound waves to produce sound. Its name comes from its most important component, a crystal detector (called a ‘diode’), which is made from crystalline minerals (such as galena). 

Home Science Tools’ Build Your Own Crystal Radio Kit for Science Buddies allows you to make this popular form of receiver with all the necessary tools. It’s a great way to allow your 7th grader to present a science fair project on radio waves while learning the basic radio circuit elements required to receive radio signals.

Find Science Fair Project Kits on Home Science Tools

Home Science Tools is dedicated to making science fun and accessible with home science kits that are easy to do! You can explore different options, from easy experiments you can do at home to explorative activities that make for great science fair projects for 7th graders. Check out our catalog in time for your child’s next science fair presentation!

Biology / Life Science

Welcome! Read other Biology / Life Science articles or explore our the rest of the Resource Center which consists of hundreds of free science articles!

Shop for Biology Supplies!

Home Science Tools offers a wide variety of biology products and kits. Shop for all your biology teaching needs: kits, dissection supplies, petri dishes & more.

Science Fair Projects for 8th Graders

Science Fair Projects for 8th Graders As kids reach the 8th grade, their exposure to science goes up a notch. Equipped with basic knowledge, they can begin to explore more complicated concepts and satisfy their curiosity for deeper answers to the 'whys' and 'hows' of...

Home Science Experiments for Preschoolers

Home Science Experiments for Preschoolers Home science experiments for preschoolers are a great way to pique your child’s curiosity, teach them valuable knowledge, and allow them to have some fun in the comfort of their own home. There are plenty of activities your...

Easy Science Fair Projects for Kids

Easy Science Fair Projects for Kids Science fairs are a long-standing tradition that provide kids with the opportunity to better understand practical concepts in fun and innovative ways. The great thing about the experiments presented at these events is that they...

How to Make a Pollinator Hotel

Have you ever wondered how you can help provide habitat for pollinators like honey bees and butterflies in your back yard? Learn how to make a pollinator hotel with this step-by-step guide and lesson. Pollinators are animals that help move pollen. Most pollinators are...

Valentine’s Day Science Projects

Valentine’s Day is a great opportunity to inspire your student’s LOVE for science! Engage your kids with science concepts such as diffusion, density, and surfactants. These three, hands-on science projects include the Dancing Conversational Hearts, Rainbow Heart, and...

JOIN OUR COMMUNITY

Get project ideas and special offers delivered to your inbox.

7th Grade Science Fair Projects

Age-Appropriate Ideas That Are Fascinating and Fun!

Jon Feingersh Photography Inc / Getty Images

• Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
• B.A., Physics and Mathematics, Hastings College

Seventh grade and middle school, in general, are a big time for science fairs because it's a wonderful educational level for students to come up with ideas to explore using the scientific method and ways to investigate their questions. Parents and teachers still provide direction, especially helping students devise manageable experiments and appropriate work technology to present their results. However, the actual experiment should be done by the 7th grader. The student should record data and analyze it to determine whether or not the hypothesis is supported. Here are some ideas appropriate for the 7th-grade level.

7th Grade Science Project Ideas and Questions

• Use a prism to show the spectrum of visible light on a sheet of paper. Mark the endpoints, which is how far into infrared and ultraviolet you can see. Compare your visual range with that of other family members or other students. Is there a difference in range between genders? Do family members have a similar range? See if you can draw any conclusions ​using the scientific method .
• Composting is a great way to reduce waste and recycle nutrients, yet some household products and foods are contaminated with heavy metals and organic chemicals. Devise a test to measure one of these chemicals and compare the concentration in compost versus that in the ordinary soil in your yard.
• Houseplants can absorb and detoxify indoor pollution. Do research to identify which houseplants are best at cleaning the air in a home, office, or classroom. Now, take the project to the next level and determine which plants are most practical, affordable, and useful. Make a chart of the chemicals the plants clean, whether the plants are toxic to children and pets, whether they can live in low-light conditions or require bright light or special care, how much the plants cost, and whether they are readily available.
• Which brand of ibuprofen (or the student could test another type of pain reliever) dissolves the most quickly?
• Does the pH of juice change over time?
• Insects can sense light and dark. Can they still see light if it's only red or blue, etc.?
• How well does a football helmet really protect against impact? You could use a skating helmet or any other protective gear, depending on what you have available.
• How does the concentration of chlorine in water affect the rate or percentage of seed germination?
• What is the effect of watering schedules on the germination (or growth rate) of seeds from a certain plant?
• How does the presence of a given medication in water affect the survivability of Daphnia?
• Does the presence of de-icer salt affect the movement behavior of earthworms?
• Does the bounciness of a golf ball relate to its ability to be hit long-distance?
• Does the species of wood affect the rate at which it burns? Its heat output?
• Does the mass of a baseball bat relate to the distance the baseball travels?
• Is the paper towel brand that absorbs the most water the same as the brand that absorbs the most oil?
• Examples of Independent and Dependent Variables
• 8th Grade Science Fair Project Ideas
• Chemistry Science Fair Project Ideas
• What Glows Under Black Light?
• Middle School Science Fair Project Ideas
• 9th Grade Science Fair Projects
• Elementary School Science Fair Projects
• Why Is the Ocean Blue?
• High School Science Fair Projects
• 11th Grade Science Fair Projects
• 6th Grade Science Fair Projects
• Questions for Each Level of Bloom's Taxonomy
• College Science Fair Projects
• Second Grade Science Fair Projects
• 10th Grade Science Fair Projects
• 5th Grade Science Fair Projects

The Edvocate

• Lynch Educational Consulting
• Dr. Lynch’s Personal Website
• Write For Us
• The Tech Edvocate Product Guide
• The Edvocate Podcast
• Terms and Conditions
• Privacy Policy
• Assistive Technology
• Best PreK-12 Schools in America
• Child Development
• Classroom Management
• Early Childhood
• EdTech & Innovation
• Education Leadership
• First Year Teachers
• Gifted and Talented Education
• Special Education
• Parental Involvement
• Policy & Reform
• Best Colleges and Universities
• Best College and University Programs
• HBCU’s
• Higher Education EdTech
• Higher Education
• International Education
• The Awards Process
• Finalists and Winners of The 2023 Tech Edvocate Awards
• Award Seals
• GPA Calculator for College
• GPA Calculator for High School
• Cumulative GPA Calculator
• Grade Calculator
• Weighted Grade Calculator
• Final Grade Calculator
• The Tech Edvocate
• AI Powered Personal Tutor

Teaching Students About the First Flight to the Moon

Teaching students about if christians are catholic, teaching students about jean arthur: an enlightening journey through the life of a hollywood icon, teaching students about reefer madness: understanding the history and dispelling the myths, teaching students about the meaning of “culminated” in a sentence, teaching students about mug shots: a valuable lesson in civics and law enforcement, teaching students about family words list, thank you messages for gift, teaching students about the downton abbey film: bringing history to life, teaching students about the league cup: a comprehensive guide, 43 of the best 7th grade science projects and experiments.

Are you looking for science activities to do with your 7 th graders? No sweat. We have you covered. Check out our list of 43 science projects and experiments that you can try with your 7th graders this month.

• Yeast Metabolism with and without Aeration | Sciencebuddies.org – Grades 6-8 Biology experiment that evaluates the effects of glucose metabolism in yeast.
• Aspirin Absorption in Carbohydrate Solutions | All-Science-Fair-Projects.com – Grades 6-8, Does aspirin absorb into the bloodstream quicker if taken with a carbohydrate food? Test aspirin dissolution in an assortment of carbohydrate solutions.
• Bacteria and Toothpaste | All-Science-Fair-Projects.com – Grades 6-8, Do you know which toothpaste cleans your teeth best? In this project, you will row bacteria from your recently brushed teeth in petri dishes to find out the answer.
• Making Batteries from Fruits and Vegetables | Sciencebuddies.org – Grades 4-7, Use veggie power to build a simple battery from a variety of vegetables. Which ones are the most powerful?
• How Do Roots Grow When the Direction of Gravity Changes? | ScienceBuddies.org -Grades 6-10, Plants respond to gravity by stems that grow upward and roots that grow downward. Experiment with germinating seeds and rotate them to make up down and down up. How do you think the growing seedlings will respond?
• Hydroponics vs. Soil Growth | All-Science-Fair-Projects.com – Grades 6-8, In this project, students find out if plants grow better in soil or a hydroponic solution.
• Puppy Proportions: Your Dog’s Early Months | Sciencebuddies.org – Grades 6-8, Find out how a puppy’s weight, growth, and proportions change early in their lives.
• Do Migratory Birds Like It Hot? | Sciencebuddies.org – Grades 6-8, Pick a species of bird and determine if there is a correlation between air temperature and where and when the birds migrate.
• That’s a Real Smile! …or is it? | ScienceBuddies.org – Grades 6-8, Can people tell the difference between a fake smile and a real one? Gather information from dozens of volunteers to find out.
• Build a Raft Powered by Surface Tension | Sciencebuddies.org – Grades 6-10, Learn about the properties of surface water tension, and use it to propel a raft.
• Paw Preference in Pets | Sciencebuddies.org – Grades 7-10, Are animals left-handed or right-handed like humans?
• Bat Detector: Listen to the Secret Sounds of Bats | Sciencebuddies.org – Grades 7-10, Study the behavior of bats to find out how do they use echolocation to catch their prey
• Saving Migratory Animals | ScienceBuddies.org – Grades 7-10, They’re here today but could be gone tomorrow. Examine the migratory path of a bird species and the similarities and differences between their winter and summer habitats. Recommend which locations should be preserved to protect these species.
• Which Metal Is the Most Resistant to Corrosion? | Sciencebuddies.org – Grades 6-8, Test several kinds of metal exposed to the air, tap water, and saltwater to determine which are the most resistant to corrosion, and which substances are the most corrosive to them.
• Ionizing vs. Photoelectric Smoke Detectors | All-Science-Fair-Projects.com – Grades 6-8, Learn how smoke detectors work, and compare the effectiveness of ionizing smoke detectors to photoelectric smoke detectors.
• Robot Movement | Education.com – Grades 6-8, Construct a robot equipped with sound/touch sensor circuitry. Run it through a maze to find out if it displays sequential or random movement.
• Repurposed Designs | Education.com – Grades 6-8, Identify items that need repurposing such as e-waste, batteries, and mattresses. Then get creative and Invent your own original repurposed design.
• Solar-Powered Robot Bug | Sciencebuddies.org – Grades 6-8, Explore electronics and solar energy by building the Frightened Grasshopper, a solar-powered bug.
• Stressed Out with Beams | Sciencebuddies.org – Grades 6-8, Test the load-bearing capacity of several types of beams, including I-beams, U-beams, rectangular beams, and T-beams.
• Build a Gauss Rifle | ScienceBuddies.org – Grades 6-8, Use magnets and ball bearings to build a rifle based on magnetism. Investigate how many magnet and ball bearing “stages” affect the velocity and distance of the projectile.
• Smart Medicine Cabinet | ScienceBuddies.org – Grades 6-8, Do you know someone who needs to take medication daily? Create a sensor that reminds patients when to take their medication.
• electromagnet?
• Grow the Best and the Largest Crystals | Sciencebuddies.org – Grades 6-8, Figure out the best temperature for making the largest, purest crystals using water and borax.
• What’s the Fastest Way to Cool a Soda? | ScienceBuddies.org – Grades 6-8, Experiment with different ways to cool a can of soda.  Find out the fastest way to get your tall cold drink.
• How Much Potential Energy Do Different Nuts Have? | Education.com – Grades 6-8, Explore the energy of living things. Prove that different varieties of nuts produce electricity in a series of experiments.
• How Salty Does the Sea Have to Be for an Egg to Float? | ScienceBuddies.org – Grades 6-8, Figure out precisely what concentration of salt in water is required to make an egg float.
• Washing Detergent & Hydrophobic Soil | Education.com – Grades 6-8, Some soils do not absorb water very well.  Find out why and if washing detergent and change their ability to absorb water.
• Make Your Own Psychrometer | Sciencebuddies.org – Grades 6-8, Make a psychrometer to measure relative humidity, then use it to measure RH in a variety of weather conditions.
• Do Our Storm Drains Keep the Ocean Trash Free? | ScienceBuddies.org – Grades 6-8, Test your local grated storm drain inlets to see if they’re up to the task of keeping plastic litter out of your community’s stormwater drainage system. If they’re not, work on improving the design.
• Can Water Float on Water? | ScienceBuddies.org – Grades 6-8, Can liquid water float on liquid water? Investigate how the density of water is affected by its temperature and salinity.
• What Weather Factors Create Radiation Fog? | Sciencebuddies.org – Grades 6-8, Make systematic observations about the weather conditions needed to create radiation fog. Can you forecast when and where it will occur?
• The Science Behind Tsunamis | Sciencebuddies.org – Grades 6-8, Study the effect of water depth on wave velocity. Learn how tsunamis form and create your own simulation model wave tank to generate a tsunami.
• Killing ‘Vampires’: Saving Money and Power | Sciencebuddies.org – Grades 6-8, In this project, you’ll identify electricity “vampires” in your home, such as computer peripherals and electronic equipment, that use power even when not in use. Find out exactly how much energy they use. Use this eye-opening data to help your family save money on electricity.
• Which Wheels Work Best? | Education.com – Grades 6-9, Experiment with how different kinds of wheels affect the speed of a skateboard.  You’ll calculate friction co-efficient and its correlation to velocity.
• Test the Efficiency of a Solar Cell? | Education.com – Grades 6-9, Find out how much of the energy from the sun that reaches a photovoltaic cell is changed over into electricity.  Predict how to position solar cells for maximum conversion.
• How Acidic Waters Make Rocks Disappear | Sciencebuddies.org – Grades 6-10, Soak some limestone rocks in varying amounts of acidic water.  Determine how much acidity is needed to make them dissolve.
• Seafloor Spreading | Education.com – Grades 6-12, Use an oatmeal box and some paper to demonstrate seafloor spreading.
• Storytelling Alice | Sciencebuddies.org – Grades 6-12, Create your own computer-animated story using Carnegie Mellon’s 3D programming software. You’ll learn computer programming with easy-to-use drag and drop tools.
• Modeling Darcy’s Law | Education.com – Grades 6-12, Model the underground movement of water, utilizing Darcy’s Law.
• Globular Clusters | Sciencebuddies.org – Grades 7-10, Explore “star gangs” in the Milky Way and beyond. Globular cluster are compact groups of about a million stars that move around in galaxies. Use statistical data to learn how globular clusters help us better understand the universe.
• Demonstrating the Separation of Mixtures | Education.com – Grades 7-10, Separate recycled objects to illustrate how mixtures are created.
• Customize Your Own Drum Set! | ScienceBuddies.org – Grades 7-10, Build a drum set using household materials, a computer, Scratch, and a PicoBoard. Program your drum set to create a synthesized Hip hop, rap, classical, techno, or electronic drumbeat.
• Harmful Algal Blooms in the Chesapeake Bay | Sciencebuddies.org – Grades 8-12, Harmful algal blooms affect the quality of water and impact people, marine animals, and birds. Study how water quality changes before, during, and after algal blooms.

Science of Learning: Metacognition in Education

What teachers really want during teacher appreciation ....

Matthew Lynch

Related articles more from author, 26 of the best 4th grade science projects and experiments.

Using Amazon Alexa for the Math Classroom

The edvocate podcast, episode 7: how digital age teachers can win over parents, 16 of the best 8th grade science projects and experiments.

13 Must-Have Biology Apps and Tools

26 of the best 5th grade science projects and experiments.

• Skip to primary navigation
• Skip to main content
• Skip to primary sidebar

Teaching Expertise

• Classroom Ideas
• Teacher’s Life
• Deals & Shopping
• Privacy Policy

7th Grade Science Fair Projects: Experiments, Model Building, Research, And More

February 18, 2024 //  by  Suzanne Bucknam

From homemade helping hands to germs and sugary drinks, we have all of the most creative ideas for science projects right here! Time to use the scientific method for some awesome experiments and impress your peers. Let us help you win your middle school science fair!

1. Caffeine and Computers

Can caffeine really help us focus more and work harder or faster? Write down some questions you want to answer and get experimenting with a cup of coffee (or two) and a computer! You can also use soda or another beverage with high caffeine content.

Learn More: ThoughtCo.

2. Bridging the Gaps

Grab some pencils and small rubber bands to build a bridge inspired by Leonardo da Vinci! Follow the instructions here and see how much weight your bridge can hold at the end. You can make it more challenging by setting a time restriction or making it into a race!

Learn More: Pinterest

3. Generating Amazement

This science fair project idea is sure to win you some blue ribbons! See what materials you need here and get started constructing your generator.

Learn More: Sciencing

4. Blowing Bubbles

Does air temperature affect whether or not bubbles can form? Answer this question and others with this fun and interactive bubble-blowing science experiment using hot and cold water and see what happens!

5. Homemade Chapstick

This science activity only requires a few natural materials that your kids can mix and match to create a completely unique lip balm. With just a few easy steps, they’ll use ingredients such as beeswax, shea butter, and almond oil to whip up this useful project that they can then share with their friends and family.

Learn More: Ecoliving Mama

6. Bacteria Buddies

Collect and measure biofilm for your 7th grade science fair project. Pick a small container or surface you want to observe, submerge it in water for 2 weeks, and see what cool bacterial growth happens. Check out the link here to get started!

Learn More: The Homeschool Scientist

7. High Voice Helium

Here is some balloon science that is sure to bring laughs to the science fair. Why does helium affect our voice? Find out the answer for yourself by attempting this fun experiment!

Learn More: Physlink

8. LEGO Coding

Do your students have an interest in computers? Grab some LEGO bricks and learn the basics of coding with this fun and useful engineering science fair project .

Learn More: Little Bins For Little Hands

9. A Rainbow of Density

This colorful experiment looks almost pretty enough to drink! Measure the density of various liquids by pouring them into a see-through container and seeing how they settle in perfect layers.

10. Helping Hands

With a few materials, you can make your own working robotic hand! See what you need to begin here, and start using your extra hand to pick up some toys or have a glass of water.

Learn More: Science Buddies

11. Can Crusher

Did you know you can crush cans with air? Well, air pressure. It’s a matter of hot and cold water causing pressure build-up in the can. Follow the instructions here to see if you can snap, crackle, and pop!

Learn More: Steve Spangler Science

12. Cooking with The Sun

Are you hungry? Now you can roast your marshmallows using an old pizza box, aluminum foil, and a few other household items. See how to put your over together here and let the sun do the rest!

Learn More: ChildSci

13. Caviar or Juice Balls?

Your classmates don’t want to drink their soda or juice? Turn it into fun and delicious juice spheres using this amazing 7th-grade science project. See what you’ll need to transform your liquids here, and get mixing!

14. Acid Rain

See all the types of corrosion and how they are affected by pH levels using this fun 8th grade science project. You can choose any acidic liquid and measure the changes you see over time. Find instructions here and get experimenting!

15. It’s Dome Time!

Use newspaper, tape, and your amazing brain to create a geodesic dome that can support a surprising amount of weight. This is a simple age-appropriate idea for 5th graders but can be modified with more challenging designs for your 7th or 8th grader.

16. Climate Change in Action!

Teach your middle school students about greenhouse gases and the wonders of our atmosphere with this fun science experiment. You’ll need some glass jars, cold water, and a thermometer. Follow the instructions here to see how the sun can heat up the water and release the gas inside the jars!

Learn More: Education.com

17. The Power of Charcoal

This magical powder is used in a variety of liquid water purification systems and you can see it in action with this easy science experiment. Follow the simple instructions here to watch how activated charcoal absorbs and removes molecules from your water!

18. Bath Bomb Science

Bath bombs are great for a relaxing soak, but did you ever wonder if water temperature affects their bubbles? Grab some jars, a thermometer, and some of these fizzy bombs to test and see the results on your bath bomb science log. Find detailed instructions on how to, here!

Learn more: Steam Powered Family

19. Mummy Apples?!

Did you know that with a few basic household ingredients you can mummify your food? This experiment uses apple slices, but you can try this in class or at home with a variety of foods. See how to make these salty mummies here!

Learn More: Raising Arizona Kids

20. It’s A Germy World Out There!

Pick a room at home, or your classroom and start swabbing! Using cotton swabs, take samples from multiple surfaces and let them sit in agar and grow. Take pictures and notes on how the germs grow in a week or two. To see what you need, check out this link.

Learn More: Angelic Scalliwags Homeschool

21. Insect Behavior Experiment

There are lots of simple and observable animal behavior experiments to try. This one sees how temperature affects ant behavior. You can put a container of ants in the fridge and another in the sun and watch/record their movements.

Learn More: Ants Alive

22. Color Associations

Try this experiment out on your classmates to see how colors affect how we learn, react, and retain information. You’ll need some index cards and markers. See how to execute this experiment in a class by following the instructions in this link.

23. Pinball Fun

Pinball machines may seem complicated, but with some creativity and a few art supplies, you can make your own to show off at the science fair. See the engineering design process to build your own here.

Learn More: Science Museum Group

24.  Classifying Candy

Classification is a way to find similarities and differences within a group. With this fun experiment, your students will classify different candies to represent taxonomy and understand a little more about group formation.

Learn More: Our Journey Westward

25. Amazing Oxidation!

Grab some household items, put them in paper cups of water, and see if they rust. Watch as they react differently depending on the type of water (distilled water versus saltwater) and take notes on your findings. For more information, check out this helpful link!

Learn More: Teach Beside Me

26. Melting Ice Mixtures

See if adding sugar, salt, or other substances changes the melting speed of ice cubes with this fun and easy experiment. Follow the steps here and log your results!

27. Air-Powered Car

Can a balloon propel a car? Test this hypothesis yourself (in a mini version) using a simple homemade cardboard car and a balloon. Make a list of questions you wish to test and see if this is the future of travel!

28. Preservative Spices

This spicy experiment will have your brain and tastes buds tingling! See what spices contain the preservative ingredient “carvacrol” and how they react with dissolved chicken broth cubes by following the procedure instructions here.

29. Testing How Medications Dissolve

There are many brands of Ibuprofen out there. Pick up a few and test how well and fast they dissolve to see their effectiveness at relieving pain. Most medications need to pass into your bloodstream to work so this can give you useful real-life information. For tips and information check out this useful link.

30. Water Erosion

This experiment is a fun way to see how water and earthwork together to create incredible natural landscapes. Pour some water into sand and see how the sand moves around and forms trenches. Log your results and repeat using different methods and strategies.

31. Tee Off!

Do you like golf? Are you curious about how height affects your swing and accuracy? Try this fun experiment by getting some volunteer golfers, male and female, and 3 different tees of varying heights. See if the longer tee helps or hinders the velocity of your ball and record your results.

Learn More: Poster 4 Teachers

32. Are All Sugars the Same?

Test to see how sugar from different sources is processed by the body. Use water, honey, juice, and table sugar to test the reactions with reagent tablets. The results might give you a sugar rush!

33. Manicure Time

Grab a few different types and brands of nail polish from your local beauty store and test them out to see which last the longest. You can put a different polish on each fingernail and see how many days they take to chip or fade. Record your results.

Learn More: Supply Me

34. Germs Around Us

Test to see which surfaces have the most germs on them. Get a bacteria growing kit and pick some places to swab. You might be surprised by the germy results!

35. Portable Solar Energy

Build your own solar battery to charge your smart devices on the go. Follow the instructions here to put together your solar battery pack and see how well it works at powering your phone.

Learn More: Instructables

36. Remembering Different Fonts 

Does using one font help us remember the content better than if we were to use another one? If our teachers use Times New Roman versus Serif will we be able to remember information more easily? Grab a computer and some volunteers and try it out yourself!

Learn More: Science Fair Adventure

37. Keep it Hot!

Do you wish your hot coffee, tea, or soup never got cold? Is there a way we can keep things hot? Try out this experiment using different cups and materials to see which ones keep the heat in the longest.

38. Musical Study Session

Should classrooms have music playing in the background to help students concentrate? How do different people react to music and do different types of music affect individuals in alternative ways? Try this out with a volunteer classroom and a playlist of various genres.

39. Flowers in Time

Are there simple things we can add to our water to help our flowers bloom for longer? Does water temperature matter? What if we add sugar or salt? Test out your ideas and hypotheses with this experiment.

40. Pen or Pencil?

Test your hand movement/fatigue and note-taking ability with different writing instruments to see which works the best. Grab a few options: big pencil, mini pencil, blue pen, gel pen, marker, colored pencil. Use your classmates as test subjects and see what they think!

41. Dominant Senses

Can we feel more sensations in the dominant side of our bodies? You can try this out with 2 bowls, some hot and cold water, and a stopwatch/timer. See if you and your friends can last longer in the different temperatures with your non-dominant or dominant hands.

42. Light Up the Dark

Black lights are a super fun tool to use in any experiment with fluorescents. See what materials, liquids, chemicals, and natural resources glow under a black light and which do not. Gives reasons to explain your findings and if your predictions were proven correct or incorrect.

43. Green Thumb or Bubble Gum?

How can we make hybrid fruits and vegetables like baby kiwi and blood limes? Scientists and botanists have been experimenting with grafting for centuries, and so can you! Use some chewing gum as a way to hold the stem and cuttings together so they can grow into one new hybrid branch, and see how your new invention grows!

Learn More: 100 Amazing Science Fair Projects by Glen Vecchione

44. Vision and Eye Color

Do blue-eyed people see better than brown-eyed people? More specifically this experiment looks at peripheral vision in different eye colors. Grab some classmates with different eye colors and some objects you can place around their area of vision to see who can see the best and if there is a correlation with eye color.

45. Pop Pop POP!

See which popcorn brand pops the most kernels per bag. Grab a few bags of different popcorn and test this out with the same time and microwave to see which gives you the most pop for your buck!

46. Insulation Investigation

Get your kiddies to explore how well different materials insulate against the cold with this simple science fair project. They can use a variety of materials to insulate some hot water, then observe and record the temperature changes that occur over time with a thermometer. 

Learn More: Family Education

47. Earthquake Simulator

Shake things up at your science fair by having your learners develop an earthquake simulator. Simply have them create a shake table to demonstrate how different structures react to tremors.

Learn More: YouTube

48. Scratching the Surface

Rocks rock! Get your kiddos to create their very own hardness scales with this super geology project. They can perform scratch tests on different minerals to help them create their scale, and then compare their results to determine which minerals are the toughest in the bunch.

Learn More: All Science Fair Projects

49. Exploring Capillarity

Set your little scientists on a quest to unravel the secrets of capillarity. All they’ll need are humble paper towels, water, and food coloring to answer a pressing question: Does thickness affect speed? As they work, have them record their results to then share their Eureka moments with the rest of their class.

Learn More: 123 Homeschool 4 Me

50. Plastic Bag Biodegradation

This one’s for all the eco-champions in your class! Arm your students with shovels and biodegradable plastic bags before having them bury the bags in some soil to conduct a study on how fast different materials break down. A few weeks later, have them unearth their bags to observe the various states of decomposition.

51. Hydroponics vs. Soil Planting

Green thumbs at the ready! Have your kiddos plant seeds in both soil and a hydroponic setup. Then, over several weeks, guide them in keeping a journal where they document each plant’s growth. By the end, you and your students will have enough data to determine which method is superior for plant growth.

52. Floating on Salt

Have your learners navigate the topic of buoyancy with this fun, floating experiment. They’ll use varying salt concentrations to test if an egg floats better in salted or unsalted water. We guarantee that they’ll be shocked at the difference some salt makes!

Learn More: Science Sparks

53. Make a Compass

Challenge your kiddos to channel your inner navigators as you guide them through the mystical realms of magnetism. Equip them with a needle and a strong magnet before setting them loose to create their very own compasses. Get them to check that their creations work by comparing them against the readings of real compasses. 

54. Fruit Battery Power

This project is perfect for keen little electricians! Have your pupils connect wires to different fruits and show them how to measure which one produces the most voltage. Whether it’s a lemon, an orange, or a banana- they’ll soon discover the shocking truth about the power of fruit!

Learn More: Teaching with Jennifer Findley

55. Natural vs. Synthetic Vitamin C

Lab coats on, everyone! Your kiddos will love this activity where they get to become chemists for the day. Guide them in investigating which has a higher vitamin C content- natural sources or synthetic supplements. Using titration methods with iodine, they’ll quickly discover which source packs the greatest punch.

Learn More: StudyLib

56. Glowing Germs

Switch off the lights, we’re going dark for a germ investigation! Shock your students as you illuminate an unseen world for them. Start by applying a UV-reactive gel to commonly handled objects around the classroom. Next, break out a blacklight and let them observe just how easily those invisible “germs” can spread.

Learn More: Kids Activities Blog

57. Photosynthesis in Different Light Conditions

Let the sun shine! For this interesting project, your kiddos will grow plants under different colored pieces of cellophane and monitor their progress. Show them how to measure growth and assess the plants’ health, so that they can determine which light color is the best for photosynthesis.

Learn More: A Green Muse

58. Effect of Microwave Radiation on Seeds

Have your learners investigate the effects of a microwave with this next idea! Start by getting your pupils to microwave different seeds for varying amounts of time. After they plant them, help them to document the germination and growth rates. You and your class might be surprised to discover that radiation has its pros and cons in the realm of botany!

59. Homemade Barometer

Step aside, weather channel! Your students will be the new meteorologists in town. Start by showing them how to build their own barometers and keep daily logs. To take things a step further, encourage them to try to make connections between atmospheric pressure and weather conditions. 

Learn More: Housing a Forest

60. Impact of Exercise on Memory

Combine a workout with memory drills with this active science project to see if physical activity boosts retention. Get your kiddos moving with an exercise session and then get them to try and complete a memory test. On another occasion, try a memory test on its own and check the difference! This experiment may just produce a generation of fit geniuses!

61. Homemade Spectroscope

Invite your kiddos to step into the multicolored world of spectral analysis with this fantastic project idea! By using simple materials like a DVD, your learners can build their very own spectroscopes. Once complete, you can let them examine various light sources to identify their unique spectra of colors. 

Learn More: Buggy and Buddy

62. Homemade Compost

Dig into sustainable living by getting your kiddos to start a compost bin! As they begin adding different organic materials, they’ll be able to observe the differences in decomposition rates which will give them valuable insights into natural recycling processes.

Learn More: The Happy Housewife

63. Detecting Fake Silver

Real or fake? Let your students decide! Task your students with authenticating real silver using a variety of different methods. From checking its magnetic properties to observing chemical reactions, they’ll have fun exploring all of the various techniques to identify real silver.

Learn more: Kidal

64. Artificial vs. Natural Sweeteners

Let the sugar rush begin! Show your little scientists yeast metabolism in action with this exciting, hands-on activity. They can see the results of yeast on natural and artificial sweeteners by watching balloons fill up with the carbon dioxide produced by the reaction. This project will undoubtedly show them which sweetener really rises to the occasion.

65. Brine Shrimp and Water Quality

It’s time to dive underwater! Have your kids evaluate the effects of water quality on brine shrimp survival. They can start by setting up tap, distilled, and saltwater environments before monitoring which is most shrimp-friendly over the course of a few days or weeks.

Learn More: Home Science Tools Resource Center

66. The Sweetness of Organic vs. Non-Organic Fruits

Hold a sweetness showdown right in your very own classroom! With this fantastic project, your students will get the chance to use refractometers to gauge the sugar content in organic and non-organic fruits. Which fruit will claim sweet victory?

Learn more: YouTube

67. LDR (Light Dependent Resistor) and Light Intensity

Circuit boards at the ready! Have your learners set up a simple electrical circuit featuring a light-dependent resistor and then ask them to measure how its resistance changes with varying light conditions. What an enlightening introduction to electronics!

• Skip to primary navigation
• Skip to main content
• Skip to footer

Science Struck

Stop Worrying, 7th Grades! Here are 35 Rad Science Fair Topics

Making projects for science fair topics for 7th grade is a unique way in teaching children scientific concepts that are difficult to understand. Which is why they must be fun, creative, and easy to try.

Like it? Share it!

Academics beyond textbooks and classroom walls make a better impact. Science fairs projects are one such kind of learning medium, where the toughest topics can be explained with interesting models and graphical representations. With a little help, any subject can be turned into an eye pleasing science fair project. To make science fair topics for 7th grade worth the effort, let the students pick the topics they like.

List of Science Fairs Topics for 7th Grade

• How does a magnet affect radish plant growth?
• Does temperature affect the performance of a fuel cell?
• Which building design will best withstand an earthquake?
• What techniques do air traffic controllers use to control air traffic? How efficient are these techniques?
• How does temperature affect the survival rate of aquatic plants?
• Can animals see in the dark better than humans? Explain how.
• Does shoe design really affect an athlete’s jumping height?
• What kind of fertilizers work better? Natural or synthetic?
• What light brightness makes plants grow the best?
• How much weight can the surface tension of water hold?
• Can people tell artificial smells from real ones?
• How does music affect animal and plant behavior?
• What is the best way to prevent an ice cube from melting?
• How is out heart rate affected by the food we eat?
• What are the terrible effects of acid rain?
• Can background noise levels affect how well we concentrate?
• Do antioxidants really improve a human’s life span?
• How does temperature affect the growth of yeast or mold on bread?
• Does the species of wood affect the rate at which it burns?
• How does talking on a cell phone or listening to music affect reaction time?
• Do we remember a sequence of letters and numbers better if they hear or see the sequence first?
• What is the importance of breakfast in our lives? How does it affect our metabolism rate?
• How does music influence learning and memory?
• Do daily memory-oriented activities slow memory loss at occurs with aging?
• How does caffeine and nicotine affect bacterial growth?
• What antibacterial properties do extracts from basil and mint plants have?
• What effects do garlic and vitamin C have on high blood pressure in people?
• Does the Atkins high-protein diet really work?
• How does exercise affect heart rate recovery?
• How does light affect the vitamin C content of juice?
• How effective are herbal oils and DEET as mosquito repellents?
• Can vocal wave form patterns be used to identify individuals?
• Can computer systems for recognizing human motion be used to counter terrorism?
• How does sunspot activity affect radio reception?
• How does the air temperature affect carbon monoxide emissions when a car is first started?

Participating in science fair projects encourages the child to read and learn more about myriad subjects. Getting involved in your child’s academics will not only motivate the child but also help you develop a bond of trust and reliability. However, you need to support the child and not do the project for him. Doing the entire project by yourself will make your child handicapped and defeat the whole purpose of the science fair.

The above list science fair topics for 7th grade are extremely easy to do. Ask your child to write a script to explain to the viewers what the project is all about. The simpler the script, the easier it is for him to understand and to explain it. Science fair projects help a great deal in explaining scientific concepts in a jiffy.

Get Updates Right to Your Inbox

Privacy overview.

15 Fascinating Science Experiments for 7th Graders

Sharing is caring!

Whether it’s for the science fair, extra credit, or just exploration, there are plenty of fantastic science experiments that seventh graders can do. Here’s a roundup of 15 fascinating science experiments for 7th graders or any child of any age really who is interested in discovering something new!! These are some of the best experiments shared across the web that are definitely worth trying.

15 Fascinating Science Projects for 7th Graders…..and beyond. 

#1 – check out charcoal’s purification abilities.

This experiment demonstrates how charcoal powder, or activated carbon, purifies water. Charcoal is used in many water filtration systems, but seeing it in action is quite impressive–and all you’ll need is activated carbon, dirty water, and a few jars! Click here for instructions.

#2 – Determine If Mint Is Actually Cooling

Sure, mint always leaves your mouth feeling cooler–but does it actually cool it down? Get the details with this fun experiment that only requires some hot water, a thermometer, and some breath mints to setup. Click here for instructions.

#3 – Experiment with what plants grow best in your home in a homemade grow box

This is such a fun experiment that your kids will love to do! Pick a various amount of seeds to plant and experiment to see which one comes up first, which one produces first etc. The possibilities are endless.  Click here for instructions.

#4 – Harness The Power of the Sun

Design the most powerful “solar oven” you can using whatever materials you have on hand–like a pizza box and some aluminum foil. Then, test the effectiveness of a few different designs and make calculations regarding how long it takes each oven, at what outdoor temperature, to melt a bar of chocolate in direct sunlight. Click here for instructions.

#5 – Measure The Effectiveness of Different Insulations

Have you ever noticed how quick ice melts when you carry a cup or glass outside? You may have even noticed that ice seems to melt more slowly when placed in a foam cup compared to a paper or plastic one. In this experiment, you’ll put these materials to the test to measure the effectiveness of each type of insulated cup–ranging from a normal glass to a cups with and without lids. Click here for instructions.

#6 – How Does Color Affect Your Memory

Are certain colors more memorable or stick out more than others? Find out with this awesome science project to see if your brain remembers things better if they are in certain colors!!  Click here for instructions.

#7 – See If You Can Prevent or Delay Rust

Rust is the result of corrosion, which occurs when moisture meets bare metal. It has long been a problem in the automotive industry and countless other fields–so what can we do to prevent or delay it? Test this out by using various products and substances (such as coatings and special paints) on clean metal and then dropping the metal into water to see what rusts the quickest. Click here for instructions.

#8 – Measure The Impact of Caffeine

Caffeine is a known stimulant and it can certainly give you a kick of energy in the morning, but does it really improve your speed or productivity? In this experiment, you’ll get to explore just how caffeine effects the body and if it really has any improvement over speed and efficiency. A typing test is a great way to measure results! Click here for instructions.

I am not an advocate of caffeine on a regular basis but discovering what caffeine does to your body could be an interesting experiment. An experiment could be done with how it affects different people differently. 

#9 – Find Out If Stretching Matters

Everyone tells you to stretch out your muscles for improved flexibility, but does stretching really make a difference? Find out by measuring flexibility before and after various stretches. Click here for instructions.

#10 – Use Cabbage to Test pH

Measuring the alkaline or acidic content of a substance doesn’t require pH strips. In this experiment, you’ll just boil down some red cabbage and use it to measure the pH of various items. The rule is simple: acids turn red and bases turn green! Click here for instructions.

I remember doing this experiment in elementary and then again in High School. Posters were updated and we ended up taking second place in High School…HA HA!! 

#11 – How Much Salt Does it Take to Float in Water???

This is an easy and fun experiment to do with eggs. You will discover how much salt it takes to allow yourself to float in water without sinking. Click Here for Instructions

#12 – See What Else Floats (or Sinks)

Most people know that oil floats in water, but the point of this experiment is to see where everything else falls. You’ll just need to take a few different substances and put them in a tall pitcher. Figure out the right order and you can make a rainbow! Click here for instructions.

#13 – Build a Generator from Scratch

Anyone can plug into a potato, but how about building a real electricity generator? With a few basic supplies, you can figure out how to do just that in this exciting science experiment. You can also easily expand upon this experiment by trying various things with the generator you build. Click here for instructions.

#14 -What do Sugary Drinks do to Our Teeth

Find out with this fun Science Experiment what sugary drinks do to your teeth! This experiment may have you think twice about how much sugary drinks you actually consume! Click here for instructions.

#15 – Testing the Effectiveness of Sunscreens

There are so many sunscreens on the market and some work better than others!! This is a fun experiment that can benefit others with your findings!! You can buy little beads that change color when placed under ultra violet light  Click here for instructions.

I hope you have found at least one in this list of science experiments for 7th graders and beyond!! 

Filter Results

• clear all filters

Resource Type

• Guided Lessons
• Lesson Plans
• Hands-on Activities
• Interactive Stories
• Online Exercises
• Printable Workbooks
•  Science Projects
• Song Videos

middle-school

•  Holidays

7th Grade Science Projects

40+ Super Easy Science Fair Project Ideas For Every Grade And Age

Science is fun ! Less fun: Everything about Science Fair season . Those two fold project boards give wicked paper cuts. Teachers seem to want a stressful amount of work put into each project. And there’s never anything cool about the last minute ideas you use when grasping at straws on the Sunday night before it’s due. Life just got easier, though. We’ve rounded up the best science experiments for each level of school so that maybe, just maybe, this year’s fair won’t cause too many tears (from you or from the kids).

Note: We’ve listed experiments in each section from easiest to the most advanced, time consuming or expensive.

Elementary School Science Fair Projects

1. Catapult time — What kind of objects fly further?

Think weight over shape.

2. How Can the Shape of a Boat Affect How Much Weight It Hauls?

Have kids create simple boats using cardboard and foil. Take note of how the shape and size of boats effects what they can hold and still stay afloat.

3. Water Drop Microscope

Microscopes are cool and science-y on their own, but laying out how water works to magnify things adds another level of, well, science.

4. Chromatography Butterfly Fun

Grab judges’ attentions with this gorgeous experiment in separating colors.

5. Can Changing Rubber-band Size Change the Speed/Distance of Travel on a LEGO Car?

This is a fun way to put your kiddo’s LEGO collection to good use!

Randy Martinez/Reshot

6. Which Simple Machines Do We Use Most?

After explaining what each simple machine is and does, have your kids “collect data” on the types they use throughout their day. Consider having them walk through some of the more surprising simple machines in life.

7. Why Do Skittles Dissolve in Water? ‘

We know all sugar dissolves in water. But, does your child?

8. Kaleidoscope Fun

How many times did you play with your kaleidoscope as a kid and did you ever look into the physics involved? Your kids might enjoy making their own in the name of a school science project.

9. DIY Speakers

Ever need to boost the sound from your phone? You probably know the mug trick, then. Explore how different vessel shapes amplify sound.

10. Spinning Top Splatter Fun

Some paint, some tops and a little bit of research is all you need for a colorful lesson on centrifugal force.

11. Make Your Own Hovercraft

Say good-bye to one of your beloved mix CDs and help your kiddo experiment with aerodynamics .

12. How does different types of milk effect Magic Milk results?

Magic milk is so fun. Why not turn it into a science coloring experiment or science fair project?

13. DIY Bouncy Balls

Catch ’em, if you can!

14. Overnight Crystals

If you’ve got Epsom salt, this cool science experiment won’t even require a trip to the store.

15. Tiny Dancer, Simple Motor

You might need to buy some copper wire for this, but it’s totally worth it for the cute factor alone.

16. Heat Sensitive Slime

Take your slime game up a notch and win the science fair all in one night.

17. How does over/under watering affect seeds?

This is pretty easy. Just use that old school plastic cup and paper towel seed growing trick, but have your child experiment with how much water they use.

18. Rubber Rainbow Eggs

This takes a couple days and could end up being messy , but it’s another eye-pleasing experiment.

19. How Do Plants Absorb Their Water?

Remember sticking celery or daisies in colored water? Same concept.

20. Which Kind of Trees Lose Their Leaves Fastest?

This one is all about collection and observation, so make plenty of time to start this.

Middle School Science Fair Projects

21. Density Tower

This tower of liquids is like the next-level oil and vinegar experiment.

22. Which Reacts Faster: Small Chunks or Large Tabs of Alka-Seltzer?

Did you know that the dissolution of an Alka-Seltzer tab can be qualified as both an explosion and a chemical reaction? Let your kids explore different theories on how to make it dissolve the fastest.

23. How Do Submarines Work?

Help build a water bottle submarine , then explore how they dive and resurface by changing their buoyancy.

24. Does Weight Affect A Drone’s Battery Life?

Remember that drone you bought your kid for their last birthday that they no longer play with? Of course you do. Put it to good use!

26. Create A Simple Circuit

The hardest part of this project will be finding D batteries in your house.

27. What Makes The Perfect Chocolate Chip Cookie?

Need a bunch of holiday cookies made? Let your kids experiment with butter temperature, baking soda and baking powder ratios and other variables within a cookie recipe. Nearly all results will be delicious, but it still counts as a science experiment.

28. DIY Stethoscope

This requires a trip to the hardware store. But, it’s a great way to discuss how sound travels and how stethoscopes work .

29. Can You DIY Yogurt?

Know anyone who makes their own yogurt or Kombucha? This is a great way to discover the science behind bacteria growth (and maybe get your kids to start washing their hands).

30. Can A Cricket Tell The Weather?

Spend a few days or weeks having kids compare the chirps of crickets to the temperature fluctuations outside.

31. Building Materials: Which Metals Are Most Corrosive?

Chances are good that you have plenty of different types of metals readily available (think: screws, silverware, change, foil, etc.), all you need is the time to test things out.

High School Science Fair Projects

32. Do Adults Still Know What They Learned In High School?

Have your kids collect questions from various exams and then administer the new tests to adult friends and family members from a wide range of fields.

33. Can I Change The Colors Of A Bonfire Flame?

Tossing different (non-toxic) litter into a bonfire (or even holding it over a candle) can cause the flames to change color.

34. What’s The Most Effective Natural Mosquito Repellent?

Don’t volunteer as a test subject.

35. How Does Social Media Usage Vary Between Generations?

This basically just requires a lot of research using their own (and possibly your) social media accounts to see what and when each age group is posting.

36.How Can You Speed Up Homemade Ice Cream?

Between rock salt and actual ice cream ingredients, this is a bit of a financial investment. The good news is that you can drown your concerns in ice cream.

37. Is My Mom’s Gold Jewelry Real?

Some chemicals found in gold and silver can have toxic properties that are harmful to bacteria. Can your pretty necklace kill ? Find out.

38. How Can You Keep A Parked Car Cool?

Test temperatures in various colored cars, as well as the effectiveness of sun shades and parking under trees.

39. Does Tire Air Pressure Really Change Gas Mileage?

Basically, an excellent science project and life lesson in car maintenance for your teenager all in one.

40. How Safe Is Your Microwave?

Track plant growth over several weeks — keep one place near the microwave and one further away.

41. Which Type of Bread Molds Fastest?

Pro-Tip: Have them store their science project bread somewhere far, far away from where you keep your actual bread.

42. Could Hospitals Recycle Their Bio-hazard Collection Resources?

Blood vials, urine collection cups, barf buckets: They’re all used as single-use plastics. But, could they be properly sterilized and reused? You’re probably going to need to know people in the right places to make this work, but it’d be a very cool experiment.

Related: Science Teachers, I Love You, But Science Projects Can Go to Hell

This article was originally published on November 14, 2019

Babble Dabble Do

30+ Science Fair Projects That Will Wow The Crowd

February 20, 2022 by Ana Dziengel Leave a Comment

Are your children signing up for the science fair this year? Have you begun the arduous task of looking for  science fair projects  that might pique your child’s interest? Or do you have a child who already has ten ideas they have been dying to try?

The science fair is a great school tradition and a memorable experience for many children (I still remember the life size plaster penguin I made in 5th grade), and if your school doesn’t conduct one, consider starting it!

This year if you are on the lookout for science fair projects I challenge you to think beyond the vinegar volcano (we have “Volcano Alley” at our school because there are so many volcano projects every year). I know, vinegar volcanoes are like a rite of childhood passage, but there are so many other amazing science ideas out there! I have compiled a list of 30+ science fair projects for kids based on their grade level below. Before we get started I wanted to share some tips for getting the most out of the science fair.

This post contains affiliate links.

Science Fair Tips

• Don’t do the project for your child! This is my number one tip. Many parents have a tendency to jump in and make children’s work “more presentable” or to assist their child so much in the project that it’s hard to know who actually did it. Listen I get it, science is fun and you want your child to have a wonderful presentation…but that’s not really what the science fair is about. It’s about your child learning how to do scientific research and present their findings in their own way. Think of yourself as a helpful guide NOT an assistant, and definitely not the boss.
• Choose something age  appropriate  When your child is choosing the science fair idea they want to try, make sure it’s age appropriate. Sure we’d all love to make a working robot but there’s nothing more frustrating than trying a project that may be too advanced for the skills of your child. And that’s when a lot of parents resort to doing the project instead. Not a good solution. So make sure your child is capable of completing the steps them self.
• Make a list of three ideas Have your child select three science fair project ideas and then go over the choices with them. Make sure they understand the steps involved in each project and wether or not they feel comfortable in executing those steps on their own with your guidance.
• Follow your child’s interests Encourage your children to explore some ideas based on interests they already have. Here’s a list of science books with projects based on things your child already loves!
• STEAM it up! STEAM projects rock the science fair!!! A great way to get kids to become more familiar with STEAM concepts it to pick science projects that crossover into art, math, engineering and more!  Two STEAM books to consider are  STEAM Kids Play and Learn (my book!) and   STEAM Kids ebook.  Both books will get you started with some great ideas!
• Read our Science Fair Mini Guide I created this mini guide to walk kids  through all the steps for completing their science fair project. You can check out the full guide here: 

Speak like a scientist! Science Vocabulary to use in your presentation

We’re almost ready to get to the projects! Before we begin, let’s review some science terms. In fact, using these terms in your science fair presentation will be sure to impress your friends and adults!

• When you watch, see, or notice something you are making an observation
• When you ask who, what, when, where, why, or how, you are forming a question  
• When you read a book or an article about your observation, you are doing research
• When you make a guess based on your observation, question, and research, you are forming a hypothesis
• When you test your hypothesis, you are conducting an experiment
• When you change one factor in your experiment at a time while keeping everything else the same, you are changing a variable
• When you take notes in your journal and write down what you see happening in your experiment, you are logging data  
• When you examine, or look at, your data, you are analyzing it
• When you are able answer your question, you are coming to a conclusion

30+ Science Fair Projects for Kids 

Now let’s get on with the science fair projects! I have organized the projects by age/grade level. Click the titles to be taken to the project instructions, unless the instructions follow below.

If you’d rather have the science fair projects list organized by subject you can download our hyperlinked PDF by subscribing to our email list here .

Kindergarten-1st Grade Science Fair Projects

1.  lemon volcano.

Skip the vinegar volcano and try lemon juice! Kids will learn about the chemical reaction between citric acid and baking soda.

2. DIY Bouncy Balls

Learn about polymers while making a DIY toy!  This variation on slime uses a few simple ingredients. <span data-mce-type=”bookmark” style=”display: inline-block; width: 0px; overflow: hidden; line-height: 0;” class=”mce_SELRES_start”></span>

3. Shiny Pennies

A classic experiment that kids love is Shiny Pennies . Collect dirty tarnished pennies and have kids soak them for a minimum of 5 minutes in different acidic liquids. We used vinegar, salsa, lime juice, and lemon juice.  After soaking, remove them from the solution and rinse in soapy water then compare which ones are shiniest. Take notes on which acid worked best to shine the pennies. Variation: Don’t rinse all the pennies after removing them from the different liquids. Can you see a difference in the rinsed vs. non-rinsed pennies? Leave them overnight and see if any of the copper oxidizes (turns green) on the non-rinsed pennies.

pictured above: Regrowing vegetable scraps, DIY Stethoscope, Simple Circuit

4.  Regrow Vegetable Scraps

Did you know you can start an entire garden from vegetable scraps? It works indoors too!

5.  DIY Stethoscope

Make your own stethoscope from a few hardware store parts.

6.  Simple Circuit

For all tech centered kids: Learn how to make a very simple circuit from easy to find items.

pictured above: Chromatography Butterflies, Rainbow Rubber Eggs, Exploring Density with Salt

7. Chromatography 3 Ways

Chromatography is the process of separating mixtures, in this case we will be separating ink into different colors.

• How to do the Classic Chromatography Project The simplest kids chromatography project using paper towels
• Chromatography Art Turn chromatography strips into a woven paper art project!
• Chromatography Butterflies Learn how to separate colors and create a sweet science based craft!

8. Exploring Density with Salt

Why don’t oil and water mix? Find out with this density experiment inspired by Lava Lamps!

9. Rainbow Rubber Eggs

Rubber eggs are another classic science project that kids love. And it’s so easy! I mean does dropping an egg in vinegar and coming back in a few days sound do-able?

2nd-4th grade Science Fair Projects

10. magic rollback can.

You just can’t get rid of this physics project! This project explores the difference between potential and kinetic energy. <span data-mce-type=”bookmark” style=”display: inline-block; width: 0px; overflow: hidden; line-height: 0;” class=”mce_SELRES_start”></span>

pictured above: Bleeding Blossoms, Teleidoscopes, Density Tower

11. Absorption 2 Ways

• Bleeding Blossoms Explore capillary action and absorption in this science meets art project.
• Magical Water Blossoms Make beautiful blossoming paper flowers with the help of absorption. This project has a simple wow moment that everyone enjoys watching.

12.  Teleidoscopes

A teleidoscope is a kaliedoscpe without an end. This means you can use it to view anything and everything. Look through one of these and you will be amazed!

13. Density Towers 2 Ways:

Yes, you can layer liquids on top of each other without them mixing! This is a classic project and kids can customize the liquids they choose to layer.

• Simple Layered Liquids Learn how to make a simple density tower out of kitchen ingredients and then turn it into a lava lamp!
• Glowing Density Tower This density tower has a bonus science surprise: it glows under UV light!

14.  Magnet Magic

Make a simple hanging magnet structure and explore the magic of magnetism.

pictured above: Chromatography Art, Dry Erase Figure, Overnight Crystals

15. Make a Lemon Battery and a Lime Light

Did you know that a chemical reaction can generate electricity?

16.  Electric Playdough

AKA Squishy Circuits, this project will demonstrate that salt and water conduct electricity!

17. Simple Sound Science

Explore the science of sound with these 4 experiments, then use your knowledge to make your own DIY instrument!

pictured above: Magnetic Sensory Bottle, Magical Plastic Bag, Cartesian Divers

18.  Magnetic Field Sensory Bottle

This will surely be a hit at the Science Fair! Watch metal particles dance and move under the influence of powerful magnets!

19.  Magical Plastic Bag Experiment

It’s not magic, it’s polymers! This easy science fair project uses a minimum of materials but demonstrates how everyday polymers work.

20.  Cartesian Divers

A classic science experiment exploring buoyancy. Make “diver” swim up and down in a bottle using science.

21. Water Drop Microscope

Did you know you can make simple microscope from a plastic bottle and water? This project teaches kids to turn trash into a science tool!

22. Spinning Tops

Learn about centrifugal force and friction with one of these three spinning tops ideas!

• Spin Art Tops
• Spin-finite Tops
• Perler Bead Tops

23. Kinetic Sculpture

Make you own moving sculpture while learning about cams and gears!

<span data-mce-type=”bookmark” style=”display: inline-block; width: 0px; overflow: hidden; line-height: 0;” class=”mce_SELRES_start”></span>

Science Fair Projects for 5th Grade and up

pictured above: Crystal landscapes, Tiny Dancers, Coffee Can Camera Obscura

24. Crystals 3 Ways:

• Overnight Crystals Grow Epsom salt crystals overnight in your refrigerator.
• Crystal Wind Catchers Borax crystals are SUPER easy to grow! Turn them into a lovely dangling wind catcher.
• Crystal Landscapes A more advanced crystal growing experiment using bluing and salt but WOW, these are gorgeous!

25.  Tiny Dancers

These are actually a very simple motor! Kids will learn about electromagnetism by building this motor that can “dance.”

26.  Coffee Can Camera Obscura

Make a simple camera obscura out of an old coffee can.

pictured above: Heat Sensitive Slime, Levitating Pen

27. Heat Sensitive Slime

Click your slime chemistry up a notch by adding in thermochromic paint!

28.  Levitating Pen

Make a pen appear to levitate using a magnet!

29.  Newton’s Cradle

Featured on Dude Perfect! I made one of these for the science fair back in the 1980’s…This science “toy” is mesmerizing for kids and adults alike!

pictured above: Electromagnetic Train, Fake Lung, Articulated Hand

30.  Electromagnetic Train

Incredible display of electricity and magnetism!

31.  Fake Lung

For kids interested in life science and biology, make a model of how our lungs work for the science fair.

32.  Articulated Hand

Another one for biology oriented kids, explore how our joints move by creating an articulated hand.

33. Salty Circuits

In this simple circuit project, kids will create an electrical circuit using salt to conduct electricity and power a light emitting diode (LED).

Are you ready for the science fair?

Whether your child has never participated in the science fair or is an old pro, I hope the science fair projects here will inspire them to have fun, explore science, and get creative the same time.

And if you still need MORE ideas I also have a giant list of chemistry projects for kids that would make amazing science fair starter projects!

Leave a reply cancel reply.

Your email address will not be published. Required fields are marked *

Save my name, email, and website in this browser for the next time I comment.

Pin It on Pinterest

Science Bob

• Experiments
• Science Fair Ideas
• Science Q&A
• Research Help
• Experiment Blog

Okay, this is the hardest part of the whole project…picking your topic. But here are some ideas to get you started. Even if you don’t like any, they may inspire you to come up with one of your own. Remember, check all project ideas with your teacher and parents, and don’t do any project that would hurt or scare people or animals. Good luck!

• Does music affect on animal behavior?
• Does the color of food or drinks affect whether or not we like them?
• Where are the most germs in your school? ( CLICK for more info. )
• Does music have an affect on plant growth?
• Which kind of food do dogs (or any animal) prefer best?
• Which paper towel brand is the strongest?
• What is the best way to keep an ice cube from melting?
• What level of salt works best to hatch brine shrimp?
• Can the food we eat affect our heart rate?
• How effective are child-proof containers and locks.
• Can background noise levels affect how well we concentrate?
• Does acid rain affect the growth of aquatic plants?
• What is the best way to keep cut flowers fresh the longest?
• Does the color of light used on plants affect how well they grow?
• What plant fertilizer works best?
• Does the color of a room affect human behavior?
• Do athletic students have better lung capacity?
• What brand of battery lasts the longest?
• Does the type of potting soil used in planting affect how fast the plant grows?
• What type of food allow mold to grow the fastest?
• Does having worms in soil help plants grow faster?
• Can plants grow in pots if they are sideways or upside down?
• Does the color of hair affect how much static electricity it can carry? (test with balloons)
• How much weight can the surface tension of water hold?
• Can some people really read someone else’s thoughts?
• Which soda decays fallen out teeth the most?
• What light brightness makes plants grow the best?
• Does the color of birdseed affect how much birds will eat it?
• Do natural or chemical fertilizers work best?
• Can mice learn? (you can pick any animal)
• Can people tell artificial smells from real ones?
• What brands of bubble gum produce the biggest bubbles?
• Does age affect human reaction times?
• What is the effect of salt on the boiling temperature of water?
• Does shoe design really affect an athlete’s jumping height?
• What type of grass seed grows the fastest?
• Can animals see in the dark better than humans?

Didn’t see one you like? Don’t worry…look over them again and see if they give you an idea for your own project that will work for you. Remember, find something that interests you, and have fun with it.

To download and print this list of ideas CLICK HERE .

• The scientific method
• science fair resources
• a little helpful advice

ADS (these ads support our free website)

Share this page.

• Grades 6-12
• School Leaders

Creative Ways to Use Graphic Novels in the Classroom! 🎥

Every product is independently selected by (obsessive) editors. Things you buy through our links may earn us a commission.

45 Fabulous 1st Grade Science Projects That Little Learners Will Love

Hands-on science is a surefire way to connect with every kid.

First graders will cheer when you announce that they’ll get to do a real, hands-on science experiment! These 1st grade science projects are easy for kids to do, with concepts that will help build their science knowledge for the future.

To make it even easier to find the best science projects for 1st graders, we’ve given each a rating based on difficulty and the materials you’ll need:

Difficulty:

• Easy: Low or no-prep experiments you can do pretty much anytime
• Medium: These take a little more setup or a longer time to complete
• Advanced: Experiments like these take a fairly big commitment of time and/or effort
• Basic: Simple items you probably already have around the house
• Medium: Items that you might not already have but are easy to get your hands on
• Advanced: These require specialized or more expensive supplies to complete

Animal and Nature Science Projects for 1st Grade

Weather science experiments for 1st grade.

• More 1st Grade Science Experiments and Projects

Learn about animals, plants, and the Earth in general with these fun science activities for first graders.

Sort animals by features

Difficulty: Easy / Materials: Basic

Use a printable or pull out the toy animals and have kids sort them into categories. It’s an early introduction to classification systems.

Learn more: Animal Sort at Fairy Poppins

Build the layers of Earth with Play-Doh

Another creative use for Play-Doh! Teach your students about the different layers of Earth and then have them create the layers using different colors of Play-Doh.

Learn more: Layers of the Earth at Evans Elementary School

Turn a plastic bag into a greenhouse

Difficulty: Easy / Materials: Medium

Turn your 1st grade science class into gardeners! Use a damp paper towel in a plastic bag to allow them to see a seed sprouting and growing roots.

Learn more: Greenhouse Bag at Lessons for Little Ones

See how shadows change throughout the day

Start in the morning: Have kids stand in one spot on the playground while a partner traces their shadow with sidewalk chalk . Ask them what they think will happen when they stand in the same spot during the afternoon, then head back outside after lunch to find out.

Learn more: Shadow Experiment at The First Grade Roundup

Discover how plants drink water

Capillary action is the name of the game, and your 1st grade science kiddos will be amazed at the results. Place celery stalks in cups of colored water, and watch as the leaves change color!

Learn more: Capillary Action at Lessons for Little Ones

Build a bird feeder

Set young engineers loose with wood craft sticks , glue, and string to create a bird feeder. Then research the best seeds to fill them with, and hang them outside your classroom window to draw in some feathered friends.

Learn more: DIY Bird Feeder at Mombrite

Observe the birds at your feeder

Once your feeder is in place, teach kids to identify common birds and keep track of their visits. Report their findings to one of Cornell Lab of Ornithology’s Citizen Science projects to let kids be part of real-life research. ( Find more bird-watching activities for kids here. )

Experiment with apples and oxidation

Apples turn brown when they’re cut open due to oxidation. Is there any way to prevent that from happening? This experiment aims to find out. ( Explore more apple activities here. )

Learn more: Apples Experiment at Camping Teacher

Use colorful beads to learn about camouflage

Animal camouflage is an important way for prey to protect itself from predators. To learn how effective it can be, place matching colored beads on top of a photo of wildflowers and see how long it takes students to find them all.

Learn more: Camouflage Activity at The First Grader Roundup

Expose a sponge fish to pollution

It’s never too early to start learning about how important it is to protect the Earth. Use sponge “fish” to see how polluted water affects the wildlife living in it.

Learn more: Pollution Experiment at The Owl Teacher

Dig in the dirt with claws

Animal adaptations allow creatures to live in just about every environment on Earth. Learn how claws help some animals survive and thrive by gluing plastic spoons to a glove.

Learn more: Claw Glove at The First Grade Roundup

Observe plant transpiration

Many plants take in more water than they need. What happens to the rest? Wrap a plastic bag around a living tree branch to see transpiration in action.

Learn more:  Leaf Transpiration at Teach Beside Me

Try these science activities to explore wind, rain, and more with your firsties.

Create a weather vane

A weather vane is one of the oldest scientific tools—they help people know which way the wind is blowing. Learn how to make your own with this cool weather experiment.

Learn more: Weathervane Experiment at Rookie Parenting

Grow a rainbow

Kids learn the colors of the rainbow along with chromatography as they watch marker streaks climb up and meet across a wet paper towel. The word might be a big one for little kids to learn, but they’ll love to see it in action!

Learn more: Grow a Rainbow at The Best Ideas for Kids

Make it rain

You need rain to make a rainbow. Simulate a rain cloud in a jar with shaving cream and food coloring, and see how the coloring saturates the “cloud” until it simply must fall.

Learn more: Shaving Cream Clouds at Fun Learning for Kids

Create frost in a can

This is an especially fun experiment during those chilly winter months. First, fill the can with ice and halfway with water. Then have the kids sprinkle salt in the can and cover the top. Finally, shake it and wait about three minutes for the frost to begin to appear.

Learn more: Frost in a Can at Kindergarten Worksheets and Games

Create an avalanche

Learn about the destructive power of an avalanche in a safe way with this experiment. All you need is flour, cornmeal, pebbles, and a plastic tray.

Learn more: Avalanche Experiment at A Dab of Glue Will Do

More 1st Grade Science Projects and Experiments

Looking for more? Try these experiments on a range of subjects to teach first graders all about science.

Give gummy bears a bath

Drop gummy bears into different liquid solutions to see how they change (or don’t) over time. Kids will learn about osmosis, as well as how scientists must be good observers.

Learn more: Gummy Bear Experiment at First Grade Buddies + Co

Play a DIY flute

These homemade flutes are fun to play, but they also help young kids learn about sound. Let them experiment with straw lengths to see what tones they can make.

Learn more: DIY Pan Flute at Buggy and Buddy

Play with Play-Doh to learn why we have bones

Ask kids to build a person from Play-Doh and see if it will stand on its own. Then show them how adding drinking straws gives it structure and strength, and explain that bones do the same for us! ( Get more clever ways to use Play-Doh in the classroom here. )

Learn more: Play-Doh Bones at Keeping My Kiddo Busy

Find out which objects magnets attract

Equip students with magnets and send them out to explore and discover which objects the magnet will stick to and which won’t. Record their findings on the free printable worksheet at the link.

Learn more: Magnet Science Experiments at Fairy Poppins

Grow a crystal garden

First grade science students might not grasp the concept of supersaturated solutions, but they’ll still love a good crystal project! Grab some magnifying glasses and let them examine the crystals up close (try not to touch, as they’re very fragile) to see the cool geometric structures.

Learn more: Crystal Garden at Babble Dabble Do

Build a jelly bean structure

If you’re doing this STEM project in the spring, jelly beans make the perfect base. If you can’t get a hold of jelly beans, try substituting tiny marshmallows in their place. Make sure to have some extras on hand since little hands are likely to snack as they build.

Learn more: Jellybean STEM Challenge at The STEM Laboratory

Experiment with marshmallow Peeps

Peeps used to just be an Easter treat, but these days you can find them in different shapes throughout much of the year. Use them to practice making predictions and recording observations with this sweet experiment.

Learn more: Easter Peeps Science Experiment at Gift of Curiosity

Spark excitement with static electricity

No doubt your 1st grade science students have already encountered static electricity by rubbing a balloon on their hair. This experiment takes things a step further, letting kids explore which objects an electrically charged balloon can pick up and which it can’t.

Learn more: Static Electricity Balloons at Kids Activities Blog

Melt crayons to explore solids and liquids

Dig out some old crayons and use them for this easy experiment that demonstrates the difference between liquids and solids. When you’re done, you’ll have a cool piece of art to display. ( Discover more uses for broken crayons here. )

Learn more: Melting Crayons at First Grade Circle

Talk through a paper cup phone

This classic experiment will help your 1st grade science class understand that sound travels in waves, through the air, and across other objects. Watching their faces light up when they hear whispers in their cups will make your day!

Learn more: Paper Cup Phone at There’s Just One Mommy

Blow a bubble snake

Difficulty: Medium / Materials: Basic

You’ll need to plan this experiment for a day with nice weather since it is best suited to outdoors. You will need an empty water bottle, a washcloth, a rubber band, a small bowl or plate, food coloring, scissors or box cutters, distilled water, dish soap, and Karo syrup or glycerin. There’s a lot of prep, but the end result is definitely worth it!

Learn more: Bubble Snakes at Hand 2 Mind

Learn why we have night and day

The Earth’s daily rotation gives us days and nights. This simple demo helps kids understand that. They draw a day scene and a night scene on a paper plate, then cover it with half of another plate that can be moved. This is an art project and 1st grade science experiment all rolled into one.

Learn more: Night and Day Play at Universe Awareness

Float food coloring on milk

Learn about surface tension by dropping food coloring onto different types of milk (whole, skim, cream, etc.). Then use dish soap to break down the fats and surface tension, and watch the colors dance!

Learn more: Surface Tension Milk at STEAMsational

Drop water onto a penny

Continue your exploration of surface tension by adding water drop-by-drop to a penny. The surface tension will allow you to add far more water than you might think.

Will it sink or swim?

Ask students to predict whether a variety of items will sink or float in water. Then test each object to check their hypotheses.

Blow up a balloon using yeast

This is similar to the classic lemon juice and baking soda experiment many kids do at some point. But this one is better for younger kids since you don’t have to worry about them splashing the juice in their eyes. Kids will be just as astonished at the results as the yeast eats the sugar and produces carbon dioxide gas!

Learn more: Yeast Balloon Experiment at The STEM Laboratory

Push on air

Teach your students about air compression and air pressure using a barrel, plunger, syringe, and flexible tube. Kids will definitely get a kick out of air wrestling and popping off their plungers using air pressure.

Learn more: Air Pressure Experiment at First Grade Adventurers

Test your reaction time

Do your students have lightning-quick reflexes? Find out with this easy experiment. One student holds a ruler vertically, while another places their hand just beneath and waits. When the first student drops the ruler, the second catches it as quickly as possible, seeing how many inches passed through their fingers first.

Learn more: Reaction Time Experiment at Science Sparks

Assemble a DIY lava lamp

Your firsties are too young to remember the lava lamp craze, but this science project will give them a taste of it as they learn about liquid density.

Learn more: Salt Volcano Lava Lamp at What Do We Do All Day?

Learn the scientific method with candy

See the scientific method in action as kids hypothesize what will happen to various types of candy in the hot sun. Observe, record, and analyze your results to see if their predictions were correct.

Learn more: Candy Scientific Method Activity at Playdough to Plato

Look into mirrors to discover symmetry

By now, 1st grade science students may have noticed that mirrors reflect objects backward. Ask them to write the alphabet in capital letters, then hold it up to the mirror. Which letters are the same when they’re reflected? Use those findings to talk about symmetry.

Learn more: Mirror Symmetry at Buggy and Buddy

Create a super-simple circuit

This is the perfect way to introduce the concept of electricity to young students since the materials and steps are minimal. You will need a D battery, tinfoil, electrical tape, and a light bulb from a flashlight.

Learn more: Super-Simple Circuit at What Do We Do All Day?

“Bend” a pencil using light refraction

Tell your students you’re going to bend a pencil without touching it. Drop it into a glass of water and have them look at it from the side. Light refraction makes it appear to be in two pieces!

Learn more: Bending Pencil Experiment at STEAMsational

Roll marbles to explore momentum

Momentum is “mass in motion,” but what does that really mean? Find out by rolling marbles of different sizes down rulers placed at various slopes.

Learn more: Momentum Experiments at Frugal Fun for Boys and Girls

Dunk eggs to understand dental health

Grown-ups are always telling kids sugary drinks are bad for their teeth, so try this experiment to put your money where your mouth is! Eggshells are a good substitute for teeth since they’re both made of calcium. Leave eggs in different kinds of beverages to see which ones do the most damage to the shells.

Learn more: Dental Health Eggs at First Grade Funtastic

Melt ice cubes to make new colors

Color mixing is one of those incredibly cool activities that kids will want to try again and again. Make ice cubes using primary colors, then let them melt together to see what new colors you can create.

Learn more: Color Mixing at Gift of Curiosity

Fly a paper airplane

Kid absolutely love creating and flying paper airplanes, so this experiment is sure to be a hit. Have your students create different-style planes and then experiment with thrust and lift to see which fly the farthest, highest, etc.

Weigh items with a homemade balance scale

Make a simple balance scale with a coat hanger, yarn, and some plastic cups. Have students gather items from around the classroom, make predictions about which will be heavier, then test their hypothesis.

Learn more: DIY Balance Scale at WikiHow

If you love 1st grade science, be sure to check out these 25 First Grade STEM Challenges .

Looking for more teacher inspiration subscribe to our newsletters .

You Might Also Like

50 Exciting 2nd Grade Science Projects for the Classroom and Beyond

These simple ideas will help kids fall in love with science. Continue Reading

Copyright © 2024. All rights reserved. 5335 Gate Parkway, Jacksonville, FL 32256