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American Focus > Blog > Education > 75+ Best Science Fair Ideas for 7th Grade
Education

75+ Best Science Fair Ideas for 7th Grade

Last updated: January 6, 2025 11:25 am
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75+ Best Science Fair Ideas for 7th Grade
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Contents
Best Chemistry Fair Ideas for 7th GradeBest Physics Fair Ideas for 7th GradeBest Physics Science Fair Ideas for 7th GradeBiology Project Ideas for 7th Grade

Best Chemistry Fair Ideas for 7th Grade

If your students love mixing things up in the lab, these chemistry projects are perfect for them. From chemical reactions to pH levels, these projects will get students excited about chemistry.

two students using a pH meter in a science lab
The Homeschool Scientist

Test pH levels

Difficulty: Easy / Materials: Basic

Students test the pH levels of various household items using pH strips or a pH meter. They can explain what pH is and why it’s important. 

Learn more: Test pH Levels

student holding a jar of blue crystals
The Homeschool Scientist

Grow crystals

Difficulty: Medium / Materials: Medium

Students can grow crystals using common household items like salt, sugar, or borax. They can experiment with different variables like temperature, time, and solution concentration to see how they affect crystal growth.

Learn more: Grow Crystals

student holding a jar of pink slime
The Homeschool Scientist

Make slime

Difficulty: Easy / Materials: Basic

This classic project is always a hit with students. They can experiment with different recipes and ingredients to see how they affect the texture and stretchiness of the slime.

Learn more: Make Slime

two students watching a chemical reaction in a science lab
The Homeschool Scientist

Explore chemical reactions

Difficulty: Medium / Materials: Medium

Students can choose a chemical reaction to study and explain the science behind it. They can demonstrate the reaction and explain what is happening at a molecular level.

Learn more: Explore Chemical Reactions

Best Physics Fair Ideas for 7th Grade

If your students love to experiment with motion, energy, and forces, these physics projects will be right up their alley. From simple machines to electricity, these projects will engage students in the world of physics.

student building a marble roller coaster
The Homeschool Scientist

Build a marble roller coaster

Difficulty: Medium / Materials: Medium

Students can design and build a marble roller coaster using household items like cardboard tubes, paper cups, and tape. They can experiment with different designs and heights to see how they affect the marble’s speed and trajectory.

Learn more: Build a Marble Roller Coaster

student building an electric circuit
The Homeschool Scientist

Build an electric circuit

Difficulty: Medium / Materials: Medium

Students can build a simple electric circuit using a battery, wires, and a light bulb. They can experiment with different configurations to see how they affect the flow of electricity.

Learn more: Build an Electric Circuit

student building a simple machine
The Homeschool Scientist

Salt and Density Experiment

Best Physics Science Fair Ideas for 7th Grade

Physics is the study of matter, energy, and the interaction between them. These physics science fair ideas for 7th graders will help them explore the fundamental principles of the physical world.

materials for balloon rocket best science fair ideas for 7th grade
Uplifting Mayhem

Build a balloon rocket

Difficulty: Easy / Materials: Basic

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This classic physics experiment teaches students about Newton’s third law of motion. It’s a fun, hands-on project that will get students excited about physics.

Learn more: Balloon Rocket Experiment

pulley materials for science fair ideas for 7th grade
Uplifting Mayhem

Experiment with a pulley

Difficulty: Medium / Materials: Basic

Introduce students to the concept of mechanical advantage and simple machines with a pulley experiment. This project will help students understand how pulleys work and the principles of force and motion.

Learn more: Pulley Science Fair Project

magnet levitation materials for best science fair ideas for 7th grade
Uplifting Mayhem

Create a magnet levitation

Difficulty: Medium / Materials: Basic

Teach students about magnetic forces and how magnets can interact with each other with a magnet levitation experiment. This project will help students understand the basics of magnetism and the properties of magnets.

Learn more: Magnet Levitation Science Fair Project

materials for electric circuit science fair ideas for 7th grade
Uplifting Mayhem

Explore an electric circuit

Difficulty: Medium / Materials: Basic

Introduce students to the basics of electricity and circuits with an electric circuit project. This experiment will help students understand how electrical circuits work and the principles of electrical conductivity.

Learn more: Electric Circuit Science Fair Project

For a fun and engaging science experiment, students can try creating polymer bouncy balls. This experiment is not only easy to do but also provides a tangible result that students can play with afterward. By changing the ingredients used in making the bouncy balls, students can observe how the properties of the balls change.

To conduct this experiment, students will need basic materials such as borax, cornstarch, white glue, warm water, food coloring, and small plastic cups. By following a simple recipe and mixing the ingredients together, students can create their own bouncy balls. They can then experiment with different ratios of ingredients to see how it affects the bounce and texture of the balls.

This experiment is a great way for students to learn about polymers and how different substances can interact to create new materials with unique properties. It also provides a hands-on experience that allows students to engage with scientific concepts in a fun and interactive way.

Overall, experimenting with other objects can be a fun and educational way for students to explore scientific concepts and learn more about the world around them. By trying out different experiments and observing the results, students can develop a deeper understanding of scientific principles and develop their problem-solving and critical thinking skills.

This experiment is a fun and interactive way for students to learn about the principles of flight and how different designs can affect the flight path of a paper airplane. By experimenting with different folds and shapes, students can observe how factors such as wing size, weight distribution, and aerodynamic features impact the distance and speed at which their paper airplanes fly.

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To conduct this experiment, students will need basic materials such as paper, scissors, and tape. They can follow a set of instructions to create different types of paper airplanes, each with its own unique design. Once the airplanes are constructed, students can test them by launching them from a designated starting point and measuring the distance they travel.

By recording their results and analyzing the data, students can draw conclusions about which designs were the most effective in terms of distance and speed. They can also experiment with different variables, such as adding weight to the airplanes or changing the angle of the wings, to see how these factors impact the flight performance.

This project not only teaches students about aerodynamics and physics principles but also encourages creativity and problem-solving skills. It can be a great way to engage students in hands-on learning and spark their interest in the science of flight.

When it comes to paper airplanes, there are certain features that can help a plane fly the farthest. Understanding the principles of aerodynamics can help explain why some paper airplanes soar while others fall flat. Let’s take a closer look at these features and how they contribute to the flight of a paper airplane.

One of the key features that can help a paper airplane fly far is its wing shape. The wings of a paper airplane are designed to create lift, which is the force that allows the plane to overcome gravity and stay airborne. The shape of the wings, specifically the angle of attack and the airfoil shape, can greatly affect how much lift is generated. A paper airplane with wings that are angled slightly upwards and have a curved shape will produce more lift and therefore fly farther than a plane with flat wings.

Another important feature of a paper airplane is its weight distribution. The center of gravity of the plane should be balanced so that it flies straight and level. If the weight is too far forward or too far back, the plane may nosedive or stall in mid-air. By experimenting with different weights and balances, students can optimize their paper airplanes for maximum flight distance.

The overall aerodynamics of a paper airplane also play a role in how far it can fly. The drag force, which is the resistance of the air against the plane as it moves through the air, can slow the plane down and limit its flight distance. By reducing drag through sleek design and smooth surfaces, students can improve the aerodynamics of their paper airplanes and increase their flight range.

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In conclusion, the features that make a paper airplane fly the farthest include wing shape, weight distribution, and overall aerodynamics. By understanding these principles and experimenting with different designs, students can create paper airplanes that soar through the air with ease. With practice and creativity, they can achieve impressive flight distances and learn valuable lessons about the science of aerodynamics.

Learn more: Rock Science Experiment

volcano model erupting
Teach Beside Me

Build a volcano

Difficulty: Easy / Materials: Basic

Every kid loves a good volcano project. Students can make a model volcano erupt, learn about the different types of volcanoes, and even create a presentation on famous volcanic eruptions.

Learn more: Check out this easy volcano eruption experiment.

Earth layers model
Teach Beside Me

Explore the layers of the Earth

Difficulty: Medium / Materials: Basic

Students can create a model of the Earth’s layers using simple household items, learn about the different layers, and even create a presentation on the composition of the Earth.

Learn more: Earth Layers Science Project

student excavating fossils
Teach Beside Me

Excavate fossils

Difficulty: Easy / Materials: Basic

Students can create their own fossil dig site, excavate fossils, clean and identify them, and even create a presentation on the types of fossils they found.

Learn more: Fossil Hunt Science Dig

water cycle model
Teach Beside Me

Create a water cycle model

Difficulty: Easy / Materials: Basic

Students can create a model of the water cycle, demonstrate how water evaporates, condenses, and precipitates, and even create a presentation on the importance of the water cycle.

Learn more: Check out this water cycle model project.

Biology Project Ideas for 7th Grade

For the students who love animals, plants, and the human body, these biology project ideas will keep them engaged and excited about science.

model of a plant cell
Teach Beside Me

Build a plant cell model

Difficulty: Easy / Materials: Basic

Students can create a model of a plant cell using simple materials, learn about the different parts of a plant cell, and even create a presentation on the functions of each part.

Learn more: Check out this plant cell model project.

leaf stomata model
Teach Beside Me

Explore the stomata of a leaf

Difficulty: Easy / Materials: Basic

Students can create a model of the stomata on a leaf using simple materials, learn about the function of stomata, and even create a presentation on how plants breathe.

Learn more: Check out this leaf stomata project.

model of blood cells
Teach Beside Me

Study blood cells

Difficulty: Medium / Materials: Basic

Students can create a model of blood cells using simple materials, learn about the different types of blood cells, and even create a presentation on the functions of each type of blood cell.

Learn more: Check out this blood cell model project.

TAGGED:7thfairGradeIdeasScience
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