This project determines what percentage of test subjects react adversely to the sound of fingernails on a chalkboard and explores their physiological responses.

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

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

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

This awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.

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.

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.

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

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

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

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

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

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.

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

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.

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

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 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.