The source that emitted the sound wave.
far away
There energy decreases
Waves; sound waves.
sound waves bounce off of walls. they need air to travel.
sound waves can't travel in a vacuum (space)
Sound waves require a medium to travel through, and, since space is a vacuum, sound waves can't travel in it.
sound waves
Because they are waves, and waves travel that way.
Sound waves cannot travel through vaccum.
sound waves
Yes, sound waves can travel through clouds.
Sound waves cannot travel in space. Sound waves some medium in order to propagate.