Exam-style question
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In a longitudinal wave, what is the relationship between compressions and rarefactions?.
- A.They occur at the same time
- B.They alternate along the wave
- C.They are the same phenomenon
- D.They do not affect each other
Model answer
What a good answer should say
- They alternate along the wave
Explanation
Why this works
In a longitudinal wave, compressions and rarefactions alternate, creating a pattern of high and low pressure as the wave propagates.
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