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

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

This science fair project idea shows how a vibrating object transfers energy to whatever it touches.

This science fair project idea demonstrates sonar mapping of the ocean floor.

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

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.