gcsescience.com                                       11                                       gcsescience.com

Waves

What is an Echo?

Sound that has been reflected is called an echo.
Sound reflection best occurs from flat, hard surfaces.

The natural echo of a room is called reverberation.
Reverberation is a measure of how much the sound is
reflected around the room. Materials that are soft and uneven
(like curtains, carpets and cushions) absorb sound
much more than they reflect it, and decrease reverberation.

Reflected sound (as ultrasound) is used for
range and direction finding, scanning and cleaning.

back       Links       Waves       Sound       Revision Questions       next

gcsescience.com        Physics Quiz        Index        Sound Quiz        gcsescience.com

Home      GCSE Chemistry      GCSE Physics

Copyright © 2015 gcsescience.com. All Rights Reserved.