Multiple Choice Question

Question

Which of the following is true for sound waves?

A.
They require a medium.

B.
They are unrelated to vibrations.

C.
They cannot travel through liquids.

D.
They can travel in a vacuum.

Answer 1

The correct answer is:

A. They require a medium.

Sound waves need a medium (solid, liquid, or gas) to travel through, as they are mechanical waves caused by vibrations.