We cannot hear any sound on the surface of the moon because there is no atmosphere to transmit sound waves. Sound is a mechanical wave that requires a medium, such as air, water, or solids, to travel through. In the case of the moon, it lacks a substantial atmosphere compared to Earth.
On Earth, when sound is produced, it creates compressions and rarefactions in the air, which are transmitted as waves. These waves reach our ears, and we perceive them as sound. However, the moon has an extremely thin and nearly vacuum-like atmosphere, with no significant molecules to transmit sound waves.
As a result, if someone were to speak or produce any sound on the moon, there would be no air or medium to carry the sound waves. Consequently, any sound they create would not reach our ears, and we would not be able to hear it.
It's worth noting that despite the absence of sound transmission through air, astronauts on the moon can still communicate with each other using radio waves or through the use of their spacesuits, which can transmit sound vibrations directly to their ears without relying on an atmosphere.