Explain the terms crests and troughs of a wave

cbse
sound
cbse-class-9-science

#1

Explain the terms crests and troughs of a wave.
Answer:
The elevation or hump in a transverse wave is called crest. It is that part of the transverse wave which is above the line of zero disturbance of the medium.
The depression or hollow in a transverse wave is called trough. It is that part of the transverse wave which is below the line of zero disturbance.