Energy in Action: Sound Waves

Product Description

When a police car with a loud siren rushes by, we can hear the sound of the siren, Have you ever stopped to think about exactly what sound is, though? Sounds are noises that our ears sense. The noises are created by fast-moving atoms. When atoms move from one place to another and then back again, this is called a vibration. Vibrating atoms and molecules create the sound we hear.