Echoes Explained With Cool Science!

Have you ever shouted into a valley and heard your voice come back to you?

That's an echo. But why does this happen with some sounds and not others? Let's find out.

When sound travels. If it hits a hard surface, like a wall or mountain, it bounces back. This is called a reflection.

The sound reaches your ears again, and you hear an echo after a short delay. However,

if sound hits a soft uneven object, like a pillow or a curtain. It gets

absorbed and doesn't bounce back. You won't hear an echo.

So to recap, you hear an echo in a canyon because sound bounces off the hard rock walls. You don't hear an echo in a carpeted room because the carpet absorbs the sound.

walls. You don't hear an echo in a carpeted room because the carpet absorbs the sound.