Question

Sound

· parallel
· mechanical
· not a vacuum
· needs a medium
· compressions and rarefaction
What type of wave is being described?
A) compaction
B) electromagnetic
C) longitudinal
D) transverse

Answer 1

It is a longitudinal wave. In a longitudinal wave the particles of the medium vibrate in a direction parallel to the direction of energy transport. Sound waves are mechanical waves as well as longitudinal waves that require a medium. They do not travel through a vacuum.

Answer 2

Longitudinal, because the sound can only travel at one direction