Answer:
I stand in one place yet fill the whole room. I can be filled with molten rock and come in every hue. What am I?
Many people own a copy of me. Without me the world would fall.
Tear off my skin. I won't cry, but you will. What am I?
You cannot keep me until you have given me. What am I?
I am a type of weapon for SCI-FI characters
I am owned by Old McDonald.