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.

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.

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 science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

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.

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.

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

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

This project examines Newton's First and Second Laws of Motion with a bicycle and water balloons.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

What's the difference between centripetal and centrifugal force? Students find out by seeing both in action as they conduct this experiment.

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

Got a young scientist at home? Try this project with him!Create your own molecule design with this home-made clay recipe and some toothpicks!

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

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

Design a hearing protection device to protect their ears from loud noises. Examine the properties of current protective hearing devices, materials.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

.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.

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.

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

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

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

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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