Plate Tectonics

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Across
  1. 4. The place where two tectonic plates meet
  2. 7. Underwater mountain range formed at divergent boundaries
  3. 8. Sudden shaking of Earth caused by plate movement
  4. 11. Boundary where plates slide past each other
  5. 14. Heat transfer process that drives plate movement in the mantle
  6. 15. When one tectonic plate sinks beneath another
  7. 18. Deep valley in the ocean floor formed by subduction
  8. 19. Molten rock beneath Earth's surface
  9. 21. The bottom of the ocean where new crust can form
  10. 22. A crack in the Earth's crust where movement occurs
  11. 23. Scientist who proposed the theory of continental drift
Down
  1. 1. Molten rock that reaches Earth's surface
  2. 2. Boundary where plates move toward each other
  3. 3. An opening in Earth's crust where magma erupts
  4. 5. Boundary where plates move apart
  5. 6. The process where new ocean crust forms at divergent boundaries
  6. 9. The rigid outer layer of Earth made of the crust and upper mantle
  7. 10. The ancient supercontinent that once joined all continents
  8. 12. The thick layer of hot rock beneath the crust
  9. 13. Describes the plates that move across Earth's surface
  10. 16. The slow movement of continents over Earth's surface
  11. 17. The outermost solid layer of Earth
  12. 20. A large moving section of Earth's lithosphere