Question

why a sound cannot be heard on the moon​

Answer 1

This is because you cannot hear any sounds in near-empty regions of space. Sound travels through the vibration of atoms and molecules in a medium (such as air or water). In space, where there is no air, sound has no way to travel.

Answer 2

Sound cannot be heard on the moon because there is no atmosphere present in moom to travell sound waves.

Sound needs medium to travel .there is no medium in moon.

as we know that earth has atmosphere and there is many Particles present in earth atmosphere. that's why sound easily travel from one place to another place.