Question

What is the main difference between a longitudinal wave and a transverse wave?

A longitudinal wave travels faster than a transverse wave.
A transverse wave always has a larger amplitude than a longitudinal wave.
The motion of the medium is parallel to a longitudinal wave and perpendicular to a transverse wave.
The frequency is directly proportional to wavelength in a longitudinal wave but inversely proportional in a transverse wave.

Answer 1

I think that the answer is b

Answer 2

The answer is: The motion of the medium is parallel to a longitudinal wave and perpendicular to a transverse wave.

Step-by-step explanation:

As you can see in the image below, the motion of a longitudinal wave is parallel to the medium or object which the wave is traveling, and the motion of a transverse wave is perpendicular.