Question

5. What is an echo? What can you do to stop the formation of an echo?​

Answer 1

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:$\implies$An echo is a repetition or imitation of sound. When sound waves hit a hard surface they might reflect, making the sound bounce and repeat. ... You were frightened when you thought someone was following you, until you realized you were only hearing the echo of your own footsteps.

:$\implies$The conditions necessary for hearing the echo:

: $\implies$The human ear can not distinguish between two successive sounds if the period between them is less than 0.1 second , Wide and big reflecting surface must be presented to hear the echo such as the walls , the mountains or the water bodies .

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