It is a sound reverberation.
I am guessing a sound wave.
reflected sound is either reverberation or echo
An Echo-echo-echo-echo! The answer is Echo
a reflected sound is an echo
An echo of a wave is exactly the same type of wave as the original wave. An echo is simply the original wave returning to the observer, so if you made a sound (a longitudinal wave of vibrating air molecules), the echo is also sound waves.
An echo is a sound caused by the reflection of sound waves.
Echo.
There can be no echo in space because space is a vacuum and there is no sound in vacuum.Even if one considered the tiny density of hydrogen in interstellar space, the separation distance between molecules is too large to create a sound wave.Only under extraordinary and peculiar circumstances could a phenomena called an echo be created and it would not be an echo of the type we consider sound.
reflection of sound is the property which causes an echo........
An echo is a sound wave that has bounced off a surface
One that has not been reflected will not have an echo,
The result of a reflected sound wave is obviously an echo.