‘What causes an echo?’
The persistence of sound after the source has stopped.
‘When can you hear an echo?’
When it’s quiet and other sounds are absorbed.
When it’s quiet, I can hear my mother’s echo still.
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‘What causes an echo?’
The persistence of sound after the source has stopped.
‘When can you hear an echo?’
When it’s quiet and other sounds are absorbed.
When it’s quiet, I can hear my mother’s echo still.
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