Plate motion

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Across
  1. 2. – Earth's outer shell
  2. 4. – Ancient supercontinent
  3. 8. – Earth’s innermost layer
  4. 9. – Oceanic crust surface
  5. 10. – Semi-fluid layer below lithosphere
  6. 12. – Plates moving apart
  7. 14. – Ground shaking from movement
  8. 16. – Plates sliding past
  9. 18. – One plate sinks below another
  10. 19. – Erupting mountain
Down
  1. 1. – Molten rock below surface
  2. 2. – Heat-driven mantle motion
  3. 3. – Layer beneath the crust
  4. 5. – Rigid outer part of Earth
  5. 6. – Plates moving together
  6. 7. – Moving slab of lithosphere
  7. 11. – Mid-ocean mountain chain
  8. 13. – Crack where movement occurs
  9. 15. – Deep ocean valley
  10. 17. – Edge between two plates