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Sounds Good!

Shira Yehudit Djalilmand

We hear all kinds of sounds every day — lots of them without even noticing them. But did you ever really think about what sound is, and how we hear it?

Wednesday, January 30, 2013

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What Is Sound?

Sound is actually a form of energy, like electricity and light. It’s made when molecules vibrate and move in a pattern of waves — sound waves. For example, when you clap your hands, that action produces sound waves. Why? When something moves or vibrates, it disturbs the substance next to it — usually air. The air molecules also vibrate, sending out waves — something like the ripples made when you throw a stone into a pond. Those waves reach our ears, which do their job of receiving and sending the sound to our brain, which then identifies it as handclapping or something else.


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