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72 Science Projects for 7th Graders

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!

Hamsters and Time of Day
Do you want to know when hamsters are most alert? Find out by timing how long it takes a hamster to negotiate a maze at different times of day!
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Plant Density and Growth Rate
Plant some seeds and watch them grow! See how the number of plants affects their growth rate.
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Water Strider Challenge: Make a Bug Walk on Water!
Can you make a pipe cleaner foil bug walk on water? Find out with this engineering challenge by building your own water strider and exploring the science of surface tension.
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Human Body Battery
Create an electric current using your own body!
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Left-Handedness and Mirror Writing
Are left-handers better at mirror writing than right-handers? Find out in this fun science project!
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Making Antibubbles
Have you ever seen a bubble that's made of air instead of water? Learn how to make your own underwater antibubbles!
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Soil as an Electrical System
Learn how soil can act like an electrical system and how it can be used to attract and hold plant nutrients.
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Glow Sticks: Temperature Effects
Let's explore how temperature affects the light from glow sticks!
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Tooth Decay Experiment With Eggs
Can your favorite drinks harm your teeth? Find out using hard boiled eggs in this science project!
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Does Cooking Deplete Vitamin C?
Let's find out if cooking fruits and vegetables depletes their Vitamin C content!
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Glowing in the Dark
Have you ever wondered how to make glow-in-the-dark stickers glow longer?
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Geode Rock Borax Crystal
Make your own sparkling geode rock crystals at home with Borax and see science in action!
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The Chocolate Rock Cycle
Have you ever heard of rocks made of chocolate? Use chocolate to learn about the rock cycle in this delicious science project!
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Rock Candy: Sweet Science
Get ready to become a candy-making scientist! Grow your own giant sugar crystals and make rock candy you can eat!
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Rock Hardness Challenge
How hard is that rock? You can learn how to classify your own rocks by their hardness just like geologists!
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Starburst Rock Cycle
Make delicious rock formations using Starbursts! Learn how the earth makes rocks in a tasty way.
Easy
Make Plastic From Milk
Did you know that milk from the fridge can be transformed into plastic? How cool is that?
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Can Exercise Improve Test Scores?
Does physical activity before an exam help you do better?
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Cloud in a Bottle
With just a few simple steps, creating a cloud in a jar can help us understand the process of cloud formation!
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The Effect of Temperature on Fingerprints
Have you ever wondered how temperature affects fingerprints? Find out in this science project!
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Staining Teeth with Beverages
Let's find out which beverage leaves the most stains on our teeth!
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Carbonation and Packaging
Does the packaging of a soft drink affect the amount of carbonation? Find out in this fun science project!
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Investigating Water Surface Tension
Let's explore how salt and temperature affect the surface tension of water!
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Caffeine and Plant Growth
Does caffeine help plants grow faster? Find out by watering mung beans with water, caffeine solution, and coffee mixture and measuring the growth!
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The Dissolving Meat Myth
Does Coca Cola really dissolve meat? Find out in this science project!
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Baseball Batting: Indoor vs. Outdoor
Does the type of stadium affect how far a baseball can be hit? Find out in this fun science project!
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Does Bounciness Affect Golf Ball Distance?
Does a bouncier golf ball travel further than a less bouncy one? Find out in this science project!
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Music and Sleep: A Science Fair Project
Does music help children fall asleep faster? Find out in this science fair project!
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Skateboard Bearings: How Far Will They Go?
Find out which skateboard bearings will make your skateboard travel the furthest!
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What Colors Attract Birds?
Do you want to know what colors birds like? Find out by setting up bird feeders in different colors and see which one they prefer!
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Bacteria and Thawing Methods
Learn how different thawing methods affect the amount of bacteria in meat!
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Does Air Pressure Affect Cushioning?
Does air pressure in a football helmet really affect cushioning? Let's find out!
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Investigating Bacterial Growth
Let's explore how acids and alkalis affect the growth of bacteria!
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Earthworms and Plant Growth
Do earthworms help plants grow faster? Find out in this science project!
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Ripening Oranges and Vitamin C
Learn how oranges ripen and how it affects the amount of vitamin C they contain!
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Mind Over Matter in Sports
Can you run faster if you think you can? Find out in this science project!
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Hydroponics vs. Soil Growth
Do plants grow faster in soil or in a nutrient solution? Find out by comparing the growth of a Peperomia plant in soil and in hydroponics!
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Bird Perching Behavior
How do the sizes of birds affect their perching behavior? Find out in this fun science project!
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Testing the Strength of Arches
Can arches really hold up heavy loads? Find out in this science project!
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Does a Swimming Cap Make You Swim Faster?
Does wearing a swimming cap help you swim faster? Find out in this fun experiment!
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Windy Bridges
Test how different bridge designs stand up to strong winds with this fun science project!
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The Speed of Springs
Does the firmness of a car's suspension system affect its speed around bends? Find out in this fun experiment!
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Bird Beaks: What They Tell Us
Ever wonder why some birds have long beaks and others have short ones? Let's find out!
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Measuring Heartbeats
Learn how to make your own stethoscope and measure your own heartbeat!
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Health Habits of 7th Graders
How do 7th graders take care of themselves? What do they eat, how much do they exercise, and how much sleep do they get?
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Bacteria and Disinfectant Resistance
Can bacteria survive a disinfectant? Find out in this experiment!
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Improving Memory
Can you remember what you saw on a flash card? What helps you remember?
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Exploring Potential Energy
Learn how height and weight can affect potential energy with this fun science project!
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Electricity from a Lemon
Discover the incredible power of lemons! With lemons and basic materials, you can create an eco-friendly battery that powers an LED light!
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Egg with Vinegar
Explore this fascinating egg experiment with vinegar that makes a bouncy egg! Discover the science of acid and base chemical reactions and protein denaturation!
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Fruit Solar System
Explore the solar system with fruits! Pick which fruit represents each planet based on their size, then order them according to their distances from the sun.
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How to Make Oobleck: Is it a Liquid or Solid?
This simple Oobleck recipe of cornstarch and water is a fun introduction to the complex science of non-Newtonian fluids!
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Sparkling Rainbow Crystal
Make your own sparkling rainbow crystals at home with Borax and see science in action!
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Magic Milk Experiment
See colors magically move in milk with soap! This fun experiment demonstrates surface tension in a vivid way!
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Solar System Model with Foil, Play dough and a Balloon
Build a mini version of our solar system with planets made from play dough or foil and a balloon sun. Discover the wonders of space!
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Pocket Solar System: A Scaled Model of Our Solar System
Ever wanted to hold the solar system in your hands? With this project, you can build your own pocket-sized model!
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Play-doh Solar System Scale Model
Explore our solar system with Play-doh! Make a scale model of planets and moons and learn about their size and distance from each other.
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How Many Earths Fit Across the Sun?
Have you ever wondered how big the Sun really is? See how many Earths can go across the Sun!
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Freezing Rocks: Mechanical Weathering with Water
Ever wondered how water can break rocks? Discover the power of ice in this exciting experiment on weathering!
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Cornstarch Quicksand: Can You Escape Its Grasp?
Mix cornstarch and water to make quicksand and see if your hands sink!
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Fizzy Rocks: Vinegar on Rocks
Find out if rocks have calcium carbonate, also known as calcite, in them with a simple fizz test!
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Porosity and Permeability of Rocks: Holding Water, Gas and Oil
Can some rocks hold more oil, gas and water than others? Find out in this rock porosity and permeability experiment!
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Measuring Rock Density
Rocks are irregularly shaped. How can you measure the density of a rock? (Density = weight / volume) Discover the answer by using water displacement and weighing the rock to ...
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My Pet Rock in the Rock Cycle
Curious about pet rocks? Make some and learn about the rock cycle in the process!
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Crayon Rock Cycle
Discover how to make your own sedimentary, metamorphic, and igneous rocks using crayons!
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Solar System Scale Model on the Sidewalk
Create your own solar system model to scale on the sidewalk and take a walk through space!
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Egg Drop Project: Protect the Egg!
Can you protect a raw egg from breaking when dropped from high up? Have fun in this engineering challenge!
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One Minute Spaghetti
Science makes it possible to cook spaghetti in just a minute! Soak it first, then cook in a flash. Save the planet while enjoying your favorite dish!
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Magical Color-Changing Lava Lamp
Watch as changing colors swirl and dance in this mesmerizing lava lamp experiment using red cabbage juice and Alka-Seltzer tablets. Discover the secrets of pH indicators and fizzy reactions!
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Paper Airplane Challenge
Let's see which paper airplane can fly the farthest! Fold, decorate, and launch your own planes to find the winning design.
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Chocolate Asphalt
Make your own asphalt pavement with chocolate and other ingredients!
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Making Lightning in a Pan
Create your own miniature lightning bolt with a pie plate, pen, thumb tack, wool sock, and styrofoam!
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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

  • Glow Sticks: Temperature Effects

  • Solar System Scale Model on the Sidewalk

  • Geode Rock Borax Crystal

  • Making Lightning in a Pan

  • Make Plastic from Milk

  • Color and Taste

  • Uncovering Fall Colors

  • The Dissolving Meat Myth

Science fair project details right above the FAQ!


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

  • Glow Sticks: Temperature Effects

  • Tooth Decay Experiment with Eggs

  • Does Cooking Deplete Vitamin C?

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?

Science museums are great places to explore if you're looking for inspiration for your next science fair project or just want to learn more about science. Science museums, natural history museums, space museums, and discovery museums are all great places to do that! You can discover all sorts of interesting things about science and find cool project ideas for science fairs.

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?

Science fair projects are a fun and unique way to discover science by asking a question and doing a science project. We'll help you find a science fair project idea and guide you through the process of doing and presenting your science fair project with Science Fair Coach's Science Fair Project Guide.


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

If you have a science fair project idea, Science Fair Coach can help you turn it into a full science fair project! Starting at Introduction to Science Fairs, we'll guide you through how to do a science fair project, from designing and conducting your experiment to collecting and analyzing your findings. Then, we'll help you showcase your results on a science fair board with our Guide to Science Fair Posters.


How do I make a science fair board?

Your science fair board is where you show off your science fair project for everyone to see and learn from. With our Guide to Science Fair Posters, you can make sure your science fair board stands out and impresses at the science fair!


What is the scientific method?

The 7 steps of the scientific method helps us understand how nature works. Learn how the scientific method is used in a science fair project example, and how it's evolved through history as scientists used different ways to learn about nature with our Guide to the Scientific Method!


What is the engineering design process?

The 6 steps of the engineering design process helps us design an effective solution to a problem. Learn how to use the engineering design process with the example of the egg drop challenge in our Guide to the Engineering Design Process!


Where can I find a science fair competition?

Science fair competitions are an excellent opportunity to explore science. One of the of the premier science advocacy organizations, the Society for Science, is associated with more than 400 science fair competitions in almost every US state, as well as over 70 other countries, regions, and territories. You can find out if there's a Society of Science affiliated science fair near you!

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!

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