Boundaries and definitions

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Across
  1. 4. sliding vertically against each other
  2. 5. sliding horizontally against each other
  3. 6. crash into one side of boundary
  4. 7. layer between crust and outercore
  5. 8. center of our planet
  6. 10. linear shaped trench
Down
  1. 1. molten rock
  2. 2. moving apart
  3. 3. pieces of Earth's crust and uppermost mantle
  4. 9. outermost layer of Earth's lithosphere