Question

When a wave becomes taller, what does it change?

A. Wavelength
B. Frequency
C. Velocity
D. Amplitude

Answer 1

When a wave becomes taller, what is changing is its Amplitude and answer is `D`.

Explanation:

Normal curve
graph{sinx [-10, 10, -5, 5]}

Wavelength increases
graph{sin(x/3) [-10, 10, -5, 5]}

It becomes taller
graph{3sinx [-10, 10, -5, 5]}