Yes it will :(
There are reports of that happening, but mostly likely it will not break while in the Xbox Console.
Not true but the disk might melt in XBox and break the XBox. Always take the disk out when you are done with it.
Yes, Xbox 360 can break your TV, but that will cost you a lot of money
No, an Xbox 360 game will not run on an original Xbox.
Yes
Theres a sonic game for XBOX 360, but I forgot about it for the XBOX
no the xbox can not understand the format of a xbox 360 game (its too new to be used on an xbox)
XBOX Live is not a game console. It's a online game service for the XBOX 360.
if it is a Normal Xbox game and you want to play it on the xbox you may need to manually update your xbox
They don't break your Xbox, but they are extremely loud. The intercoolers themselves have a short lifespan though. You must often remember to clean the fan though!
XBOX Classic game usually refers to the old XBOX games for the first XBOX system. There is now a 360 system. Some of these are available on XBOX Live in the Arcade section.
I don't think that you can play an original Xbox game on an Xbox 360 live. But some games from the old xbox you can play on Xbox 360.