Riddles!

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Across
  1. 3. What's filled with T, starts and ends with T?
  2. 6. What comes up when rain comes down?
  3. 8. What is so delicated that saying tis name breaks it?
  4. 9. What goes up but never comes down?
Down
  1. 1. What word becomes shorter when you add two letters to it?
  2. 2. What travels around the world but stays in one spot?
  3. 4. What is at the end of a rainbow?
  4. 5. If I share it, I don't have it. What is it?
  5. 7. If I drink I die, if I eat I am fine. What am I?
  6. 9. What can you catch but now throw?