Physics
Sound is a wave or vibration that travels through three states of matter solid,liquid and gas and of it is somthing that can be heard but,have you wondered how does sound travel it's simple,it all starts with a mechanical movement like pouring hot chocolate in a mug clapping your hands or hitting a gong so,when you hit a gong there's a movement which causes some vibration in the molecules which in turn,causes other molcules around them to vibrate
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Dakshu, It is sooo good. Keep up. Watch more videos.