Question

How is wavelength measured (Select all that apply. from the trough (bottom) of one wave to the trough of the next wave

from the trough (bottom) of one wave to the crest (top) of the next wave
from the crest (top) of one wave to the crest (top) of the next wave
from the crest (top) of one wave to the trough (bottom) of the next wave

Answer 1

The first two

Answer 2

Wavelength is measured from crest to crest. Amplitude is from trough to crest or crest to trough