When a sound wave moves through a medium such as air,the motion of the molecules of the medium is in what direction (with respect to the motion of the sound wave)?
A)perpendicular
B)parallel
C)anti-parallel (in opposite direction)
D)Both choices b and c are valid.

Question

Quizplus · Accepted Answer

The motion of the molecules of the medium is both parallel and anti-parallel to the motion of the sound wave. This is because the sound wave is a longitudinal wave, which means that the particles of the medium vibrate back and forth in the same direction as the wave is traveling.

When a Sound Wave Moves Through a Medium Such as Air,the