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DT Education Q&A

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Physics 1/2 – Amplitude of a wave

How do you find the amplitude of a wave? Does it start from the middle to the top or the middle to the bottom?

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Isabella DT
Isabella DT
Sep 18, 2025

Hey Opal,

Either!! The amplitude of a wave is "the distance from the middle of a wave to the top of the crest, or to the bottom of the trough". So, you can find the amplitude using either of the two methods you described - you'll find they're the same value.



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