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

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

.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 experiment will explore how mallets of various materials and weight create sonic tones of varying lengths.

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

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

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.

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.

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

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

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