Question

Which type of wave requires a medium?

Answer 1

Answer:

The closest is “A”, however an ocean wave is not truly a transverse wave. It belongs to the category “gravity wave” (note: NOT gravitational wave as in cosmology) and occur at the interface between two media. In the case of a wave on the ocean surface it is specifically called a “surface gravity wave” . The particles in a surface gravity wave move in an oscillatory circular motion called the wave orbit not in a back and forth motion.

Answer 2

The correct answer is option C. Sound wave

A sound wave is an example of a mechanical wave which requires a medium.