Consider a vibrating guitar string that makes a sound wave that moves through the air. As the string moves up and down, the air molecules that are a certain horizontal distance from the string will move:
A) up and down.
B) toward and away from the guitar string.
C) back and forth along the direction of the length of the string.
D) in circles around the guitar string.

Question

Quizplus · Accepted Answer

The sound wave produced by the vibrating guitar string is a longitudinal wave, causing air molecules to move back and forth in the direction of the wave propagation, which is toward and away from the string.

Consider a Vibrating Guitar String That Makes a Sound Wave