Igor is listening to a sound wave that varies in amplitude from low to high.This means that the sound is:
A) becoming higher in pitch
B) changing from soft to loud
C) moving far away and coming closer again
D) increasing in complexity

Question

Quizplus · Accepted Answer

Varying amplitude in a sound wave indicates a change from soft to loud, rather than a change in pitch (A), distance (C), or complexity (D).

Igor Is Listening to a Sound Wave That Varies in Amplitude