Tectonic plates

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Across
  1. 5. Thicker crust type.
  2. 7. Theory of moving lithospheric plates
  3. 9. Plate boundary where two plates move away from each other.
  4. 10. Type of plate boundary where two plates collide.
Down
  1. 1. Plate boundary where two plates slide past each other.
  2. 2. Thin crust type containing basalt.
  3. 3. When one tectonic plate moves underneath another
  4. 4. Supercontinent from 245 million years ago.
  5. 6. Type of boundary where continental plates smash together to form mountains.
  6. 8. Proposed continental drift.