Answer:
Lighter than what I am made of, more of me is hidden than is seen. What am I?
There is one in a minute two in a moment and none in a thousand years. What is it?
What has legs but doesn't walk?
Die without me, never thank me. Walk right through me, never feel me. What am I?
I run up and down the stairs without moving. What am I?
What an fill a room but takes up no space?