The vibrations of a longitudinal wave move in a direction
A) that changes with speed.
B) at right angles to the direction of wave travel.
C) along the direction of wave travel.

Question

Quizplus · Accepted Answer

In a longitudinal wave, the vibrations or oscillations of the particles in the medium are parallel to the direction in which the wave is traveling. This is in contrast to transverse waves, where the vibrations are perpendicular to the direction of wave travel.

The Vibrations of a Longitudinal Wave Move in a Direction