Question

which wave, a or b, has lower energy?
o a, because it has a higher amplitude
o b, because it has a higher amplitude
o a, because it has a lower amplitude
o b, because it has a lower amplitude

Explanation:

The energy of a wave is related to its amplitude. The higher the amplitude, the higher the energy. Wave A has a lower amplitude than wave B. So wave A has lower energy.

Answer:

A, because it has a lower amplitude