Question

what are echoes??????????​

Answer 1

Answer:

An echo is a sound that is repeated because the sound waves are reflected back.... Although the direction of the sound change , the echo sounds the same as the original sound. Echoes can be heard in small space with the hard walls , like well , where there are lots of hard surface all around.

Explanation:

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Answer 2

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An echo is a sound that is repeated because the sound waves are reflected back. ... Although the direction of the sound changes, the echo sounds the same as the original sound. Echoes can be heard in small spaces with hard walls, like wells, or where there are lots of hard surfaces all around.