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

This science fair project idea shows how a vibrating object transfers energy to whatever it touches.

This science project examines the history of earthquakes and what we can do to prevent future disasters.

Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

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

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

Demonstrate how we are able to locate sounds, echolocation. Have a blindfolded subject locate you by the sound of your clapping.

Find out whether matching resonant frequencies can cause objects to shatter.

This science fair project idea produces varying pitches of sound.

Find a mathematical relationship between the intensity of a sound wave and distance from the sound source. Use a pedometer and a sound level meter.

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

The purpose of this science fair project is to build a basic radio.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

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

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.