This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

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.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

This experiment investigates whether there are certain sounds that affect men and women differently

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

This science fair project idea demonstrates sonar mapping of the ocean floor.

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

In this project students determine which instruments composers use to create birdsongs and birdcalls in classical music.

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

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

This experiment will explore how mallets of various materials and weight create sonic tones of varying lengths.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

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.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.

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.

Get a cool and easy science fair project idea which helps high school students in understanding concepts behind the working of a microphone.