Answer:
Explanation:
In physics, sound is defined as waves. Sound, which needs a medium to travel through, travels in waves that our ears pick up. This differs from the word used in the dictionary because in the dictionary, sound would be referred to as the noise an object or animal or human makes. In physics, that is not the case. Space is a vacuum, meaning there is no air particles for sound to travel through, so space will always be silent no matter what. Planet Earth has air and other molecules, so sound can travel and be picked up by our ears. Hope this helps!
