Puzzle Time

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Across
  1. 2. opposite of white
  2. 4. a large landmass taller than a hill
  3. 5. when you aren't sure of something
  4. 6. opposite of black
  5. 10. when you know something for sure
  6. 11. quite a bit of water in one place
Down
  1. 1. children who don't listen and make a mess are...
  2. 3. a reptile with a hard shell on its back
  3. 7. this vehicle goes choo choo
  4. 8. something you tell children at bed time
  5. 9. the Netherlands has more of this vehicle than people