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.

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

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

This science fair project idea produces varying pitches of sound.

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

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

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

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

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.

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

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

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

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

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

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

Make stunning pendulum waves and learn the math behind the patterns generated with this cool and easy science project.

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

This classic children's game demonstrates how sound travels through air vs. through a solid.

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

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

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

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

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.

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

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

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

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

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

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