alleryIn a sound wave, a region where the density of the medium is HIGHER than average is called a:
ARarefaction
BCompression
CTrough only
DCrest only
Answer & Solution
Correct answer: B. Compression
A compression (C) is a region of higher-than-average density, formed when the source pushes nearby medium particles together.
The complementary low-density region is a rarefaction (R).
A sound wave is a series of alternating compressions and rarefactions travelling through the medium.
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