Answer;
-The particles are temporarily displaced and return to their normal position when the wave passes.
Explanation;
-A wave can be described as a disturbance that travels through a medium from one location to another location.
-When a wave is present in a medium (that is, when there is a disturbance moving through a medium), the individual particles of the medium are only temporarily displaced from their rest position. There is always a force acting upon the particles that restores them to their original position.
-The particles of the medium simply vibrate about a fixed position as the pattern of the disturbance moves from one location to another location.
