Plate Tectonics.

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Across
  1. 2. Where magma comes to the surface
  2. 5. Fractures between two plates
  3. 9. A layer of rock that is made up of ocean and continents
  4. 10. Molten rock above the Earths surface
  5. 14. A ring of volcanoes in a ocean
  6. 15. When tectonic plates move away from eachother
  7. 18. Liquid metal layer
  8. 19. Molten rock below the earths surface
Down
  1. 1. A long mountain range on the oceans floor
  2. 3. The super continent
  3. 4. The theory that the lithosphere is divided into various peices
  4. 6. Outer part of mantle, layer that floats on liquid metal
  5. 7. Currents caused by difference in temperature
  6. 8. Carries the edge of one plate under another plate
  7. 11. When plates move towards each other
  8. 12. Place where lots of volcanic activities occur
  9. 13. The theory that tectonic plates drift over time
  10. 16. When tectonic plates rub against eachother
  11. 17. The center of the Earth
  12. 20. Uppermost layer of the earth