What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

This science fair project idea discovers new ways to use recycled materials and encourages new architectural design ideas.

Examine how the tire treads of a bicycle affect its rolling frictional force. Change tires, test speed performance on different terrains.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.

The purpose of this science fair experiment is to investigate whether the color of your hair affects how much static electricity is carried.

This science fair project idea examines liquids of different densities.

Determine the maximum distance traveled by projectiles launched at an angle. Use some cool math to figure out at which angle your projectile will go farthest.

Science far project which determines whether the material of a baseball bat affects the distance that the baseball will travel.

This science fair project idea determines if females or males tend to do better on optical illusion tests and whether certain age groups also do better.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Do your laundry and your science project simultaneously! This science fair project investigates whether the color of a garment affects the time needed to dry.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

This science fair project idea teaches about the size of two different systems: the solar system and an atomic system.

This science fair project idea explores whether talking to a plant will help it grow.

In this project, a basketball containing different psi is dropped to see how well it bounces.

A cool physics science fair project idea for 7th grade exploring the application of distance, velocity, and time equations.

In this cool science project, model how impact craters form on the surface of the moon.

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

By dropping a magnet through a copper tube, kids observe the cool (and bizarre) braking effect produced by the eddy currents predicted by Lenz's law.

This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.

The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

Score a bull's eye with this cool science fair project on horizontal projectile motion. Guide a marble to its target and predict its trajectory using math!