1. The horizontal distance between the two successive crests of the wave, which also represents the distance between the two peaks of the amplitude, is the wavelength.
the answer is: C.
2. The speed and length of the waves are given by the formula v = f · λ, where
v - velocity, f - frequency, and λ - wavelength means how many cycles (crests) are in one second. If the wavelength and speed are decraesed, this means that the number of cycles (crest) per second increases, that is, the frequency increases, which is also according to the given formula. That means wave grows higher.
the answer is: B.
3. A tidal pattern that has two high tides and two low tides each day is a semidural pattern, or semi-daily, which means when two highs and two lows are about the same height.
the answer is: C.