Answer:
I'm a god. I'm a planet. I measure heat.
What is used by man, tossed by trees, everywhere but unseen?
A sphere has three, a circle has two, and a point has zero. What is it?
Ambitious people will climb the social version of this contraption.
It is something you make after you've weighed your options.
I am a room that has a roof but no walls. What am I?