This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

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

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

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

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

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

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

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

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.

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