Plate Tectonics Puzzle

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Across
  1. 2. The least dense part of the crust
  2. 4. When two plates collide
  3. 5. The scientist that discovered Pangaea the super continent
  4. 7. A weakened area in the crust
  5. 10. The name of when our continents where one
Down
  1. 1. The solid layer of the core
  2. 3. The denser part of the crust
  3. 6. When two plates spread apart
  4. 8. When two plates slide past each other
  5. 9. The liquid layer of the core