Question

1. what characteristic of the wave changed when the loudness was changed? (5 points)

wavelength
amplitude
starting position
frequency

Explanation:

Loudness of a wave is related to its amplitude. Higher amplitude means louder sound. Wavelength is related to pitch (for sound waves), starting position is just the initial point of wave generation and not related to loudness, frequency is also related to pitch (for sound waves).

Answer:

amplitude