Question

What is sound and how is it produced?

Answer 1

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Sound is air molecules hitting each other, bouncing back, then again hitting each other, and so on. This back-and-forth movement is called vibration. Sound is produced when something like a drum vibrates, and starts the aforementioned bouncing of air molecules. Sound is picked up inside your ears by eardrums, which are like reverse-drums, in that they vibrate with the air molecules. This vibration is then converted to biochemical signals which travel to your brain.
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Answer 2

Sound is a form of energy that produces a sensation of hearing. It is produced when particles in a medium vibrate. For example- If we beat the skin of a drum then its stretched membrane starts vibrating and produces sound.

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