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

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Using a toy race car kids create a visual model of the Doppler Effect.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.