Riddles - Questions Part 1

1. What gets wetter and wetter the more it dries?
2. You throw away the outside and cook the inside. Then you eat the outside and throw away the inside. What did you eat?
3. What can you catch but not throw?
4. I can run but not walk. Wherever I go, thought follows close behind. What am I?
5. Name three keys that unlock no doors?
6. What turns everything around, but does not move?
7. What flies without wings?