This is the highest part or point of a wave, Crest, Trough, frequency, hill, polar point, speed, A long and narrow or shallow channel or depression (as between waves), Crest, Trough, Frequency, hill, polar point, speed, It is the distance between successive crests of a wave, Crest, Trough, Frequency, hill, wavelength, adjacent, It is the overall vertical change in height between the crest and the trough, Trough, wave height, amplitude, wavelength, sea level, period, It is the distance from the center line to the top of a crest or to the bottom of a trough, Trough, wave height, amplitude, wavelength, sea level, period

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