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Sound waves consist of both compression and rarefaction. The compression is caused when something pushes air away, and it bunches up, causing a pressure increase. Rarefaction is the reverse; when you pull away, you create a low pressure area and pull the air with it. However, the overall energy expenditure moves outwards, as each successive volume of air is affected by the one before it, which was affected by the one before that, all the way back to the source.

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14y ago
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5mo ago

Sound waves travel outward from their source in all directions, spreading and propagating through a medium such as air, water, or solids. The waves transmit energy and vibrations as they move through the medium.

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Q: Do sound waves travel either inward or outward from their source?
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