Sound waves are mechanical waves in which the particles in the medium vibrate in a direction parallel to the direction of energy transport. identify another name for this type of wave motion.

longitudinal wave motion

Explanation:

There are two types of wave motion .

transverse wave motion and longitudinal wave motion

Transverse wave motion : A wave motion in which the particles of medium vibrates in the perpendicular direction of the propagation of wave is called transverse wave motion. For example, light waves.

Longitudinal wave motion : A wave motion in which the particles of medium vibrate in the same direction of the propagation of wave is called longitudinal wave motion. For example, sound waves.

So, the another type of wave motion is longitudinal wave motion.

d.7.5cm is your answer