Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

In this project, a model of a submarine is built to simulate the buoyancy and displacement of water and air.

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 researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

The goal of this project is to create an exciting topographical map out of dough.