Question

when ocean waves hit a rocky cliff, they bounce off the cliff and change direction. this is an example of reflection.reflection occurs when waves interact with highly dense matter. the reflected wave bounces off the dense matter and is then transmitted back through the original medium.which of these describes a reflection?a pebble is dropped into a still pond and creates waves. one wave travels along the surface of the pond.a speedboat moves through a lake and creates waves. one wave travels toward a buoy and moves it up and down.sam jumps into a pool and creates waves. one wave travels to the pools edge and bounces back.

Explanation:

Reflection is when waves bounce off a dense material and travel back through their original medium. The first option describes wave propagation without bouncing, the second describes wave interaction with an object causing movement, only the third option has a wave hitting a boundary (pool edge) and bouncing back, matching the definition of reflection.

Answer:

Sam jumps into a pool and creates waves. One wave travels to the pool's edge and bounces back.