This science fair project idea produces varying pitches of sound.

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

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.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

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

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

This science fair project idea produces sounds by creating vibrations using different objects.