What do all mechanical waves have in common?(1 point)

Question

Responses

They are all able to move through empty space.
They are all able to move through empty space.

They must move through a medium.
They must move through a medium.

They all vibrate in the same direction as the wave’s motion.
They all vibrate in the same direction as the wave’s motion.

They all vibrate at right angles to the direction the wave is moving.
They all vibrate at right angles to the direction the wave is moving.

Answer 1

The correct response is:

They must move through a medium.

All mechanical waves require a medium (such as air, water, or solid materials) to propagate; they cannot travel through a vacuum.