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.

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.

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

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.

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

.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.

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

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.

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

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

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

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.