The video explains the concept of wave reflection, where waves return to their original medium after encountering a boundary between two different media. It highlights familiar examples such as light reflecting off mirrors, glass, and water, and extends the concept to radio waves, sound echoes, and compression waves from earthquakes.

What happens to a wave when it reaches the boundary between two different media?

In what medium do we commonly observe light reflections?

Can you name other types of waves that exhibit similar reflection behavior as light?

What are some examples of sound producing echoes?

How do compression waves from earthquakes behave in relation to reflections?