If a leaf falls in the forest and no one hears it does it make a sound?

Answer:
Yes. By definition, sound is: "mechanical vibrations transmitted through an elastic medium" (dictionary.com). Noise doesn't need to be perceived to be defined as "sound" since it is a mechanical entity.
Contributor: Wayne
First answer by ID3514621132. Last edit by Wayne Lambert. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 1 [recommend question].