MICROANATOMY

Detailed explanation-1: -An echo is a sound that is repeated because the sound waves are reflected back. Sound waves can bounce off smooth, hard objects in the same way as a rubber ball bounces off the ground. Although the direction of the sound changes, the echo sounds the same as the original sound.

Detailed explanation-2: -Sound waves can reflect off surfaces. We hear reflected sound waves as echoes. Hard, smooth surfaces are particularly good at reflecting sound. This is why empty rooms produce lots of echoes. Soft, rough surfaces are good at absorbing sound.

Detailed explanation-3: -When we shout in a large or vacant space, the sound is reflected back. Suppose you are standing in front of a high wall and clap your hand, you can hear the same sound of the clap back again. This is an echo.

Detailed explanation-4: -Sound waves suffer reflection from the large obstacles. As a result of reflection of sound wave from a large obstacle, the sound is heard which is named as an echo. Ordinarily echo is not heard as the reflected sound gets merged with the original sound.