Good Riddles

Question: Under pressure is the only way I work,
and by myself is the only way I'm hurt.

What am I?

Question: Which eight-letter word still remains a word after removing each letter from it?

Question: What has a face and two hands?

Question: A mirror for the famous, but informative to all.
I'll show you the world, but it may be a bit small.

What I am?

Question: What gets easier to pick up the larger it gets?