Answer:
What word becomes shorter when you add two letters to it?
I shift around though always slowly. I never move more than a few inches at a time. A large movement by me can kill many people. I am huge yet unseen by humans.
I am a tool for fairies.
A large oasis in the desert. Come with cash and leave with none. What am I?
I must be broken before you can use me. What am I?
What is lighter than what it is made of?