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

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

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

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?

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

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 idea produces varying pitches of sound.

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

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.

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.

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