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

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

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

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

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

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 classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

.Have you ever had problems with your wifi signal strength? In this experiment you will learn about how wireless signals pass through the air and solid objects.

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

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

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

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

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.

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.

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

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

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

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

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

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