what are compression
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Explanation:
The definition of compression is the action or state of being squished down or made smaller or more pressed together. When a pile of material is squished together and made smaller and more dense, this is an example of compression.
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Answer:
Compression and Rarefaction.
• Compression- a region in a longitudinal (sound) wave where the particles are closest together.
• Rarefaction- a region in a longitudinal (sound) wave where the particles are furthest apart.
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