This classic children's game demonstrates how sound travels through air vs. through a solid.

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.

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

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

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

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

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.

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