Question

A longitudinal wave causes its medium to move in what direction?

O A. Perpendicular to the direction the wave travels.
B. Parallel to the direction the wave travels.
C. Both perpendicular and parallel to the direction the wave travels.
D. Any of the above.

Answer 1

Parallel to the direction the wave travels.

Step-by-step explanation:

Longitudinal wave is a type of wave which moves in the same or opposite direction to the direction of motion of wave. It moves in the form of compression and rarefaction. The area where the density of particles is more is called compression while the area where the density of the particles is compact is called rarefaction.

Hence, the longitudinal wave moves parallel to the direction the wave travels.