Science, asked by blossom25, 2 months ago

Define crest for class 7​

Answers

Answered by Anonymous
3

Answer:

A crest is a point on a surface wave where the displacement of the medium is at a maximum. A trough is the opposite of a crest, so the minimum or lowest point in a cycle.

Explanation:

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Answered by janvinegi2708
7

Answer:

A group of feathers on the top of a bird's head

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