The Difference Between a Wave Trough and a Wave Crest

Question

The difference between a wave trough and a wave crest is known as
A) Swash
B) Backwash
C) Wave length
D) Wave height
E) Langmuir circulation

Accepted Answer

Wave height is the vertical distance between a wave's crest (the highest point of the wave) and its trough (the lowest point), which is the correct answer.