Answer:
Crest: the highest point of a wave.
Trough: the lowest point of a wave.
Height: the distance between a wave's crest and trough.
Amplitude: the distance between the crest or the trough to the still water line in between.
Period: the time between successive swell crests.
These are all the ones that I could think of, since I haven't been to the beach in years!
Explanation:
-Army
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