A tree falling in the forest makes a sound only if something hears it fall. Vibrations in the air and ground near the tree are not 'sound' unless perceived by a creature sensitive to them. Sound is not vibration. Sound is the perception of vibration.
Yes, if someone is there to hear it. Otherwise, no.
A huge thump if it is a big tree.
I think sound is the same whether one is there to hear it or not. I get the Zen point of the question (kinda sorta) but it is a bad example of pointing out emptiness, etc. I never really thought it was a very good way to illustrate the point the sages were getting at.
It even makes a lot of noise!
Yes , TIMBER
It makes sound waves regardless of whether anyone hears them or not (basic physics). But those waves don't become sound until they're heard.
It does<br />
It depends on what you mean by sound.<br />
If sound is something that has to be heard or observed than no.<br />
If sound is the propegation of pressure through air then yes.
its drowned out by the chainsaw