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Lesson: Chapter 4 — Waves and their applications

4.1.2. Longitudinal waves 2 of 4

Question 2

What is a rarefaction?

The right answer is the one marked above.

A region where the coils are spread further apart. Pulling the end of the slinky back spreads the coils apart and makes a rarefaction.

Squeezed-together coils are a compression, and the highest point of a wave is a crest, which belongs to transverse waves.

Answer the question to continue.