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 produces varying pitches of sound.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.