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.