SoUNd

____ is a wave which propagates through a specific medium.

____ is a repeated sound reflected from a hard surface.

It is produced by vibrations.

The vibrations of the strings from a violin produce .

When a sound wave hits a hard surface and it cannot pass through,

the sound bounces back.

True or False

•The bouncing back of the sound is called the ____.

•When a reflected sound bounces back towards the source, an echo can occur.

True or False

____ is a repeated sound reflected from a hard surface.

•When sound is reflected from the hard surface  of a smaller space, the sound may bounce off walls several times, producing multiple echoes.

This kind of reflected sound is called _____

• _____ is the use of reflected sound to locate an object.