Echo..... Yes most certainly an echo.
echo
the top of a sound wave is a crest
The waves in which sound appears is called wave form of sound.
A sound wave with high sound pressure (amplitude) or high sound particle displacement (amplitude) is a sound wave that has a high loudness.
Sound is a wave that travels through air and an echo usually occurs when you are surrounded by walls or in a tunnel of some sort. The sound wave that comes back to you has already hit the wall and bounced back so you can hear it again.
It is called an echo.
Reverberations
A bounced sound wave is acalled an echo. You can hear these echos when you yell into a cave or a crevasse or an abyss.
An echo is a sound wave that has bounced off a surface
echo
the top of a sound wave is a crest
The waves in which sound appears is called wave form of sound.
A sound wave with high sound pressure (amplitude) or high sound particle displacement (amplitude) is a sound wave that has a high loudness.
Sound is a wave that travels through air and an echo usually occurs when you are surrounded by walls or in a tunnel of some sort. The sound wave that comes back to you has already hit the wall and bounced back so you can hear it again.
A stretched-out area of a wave is called a rarefaction.
Sound is a pressure wave. Objects that "allow" sound to travel through them could be called wave guides.
The area of a sound wave where particles are less dense is called a rarefaction. It is the diminution in the density of a sound wave.