Plate tectonics

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Across
  1. 4. when the earth shakes
  2. 6. a long cut in the ground
  3. 8. sedimentary rocks typically occur in
  4. 10. where heat rises under the earth crust
  5. 12. a major fracture in the earths crust in North America
  6. 14. the solid outer part of the earth
  7. 15. a single supercontinent
  8. 16. belt of volcanoes
  9. 19. pieces of the earths crust
  10. 20. preserved of plants and animals
Down
  1. 1. elevated portion of the earth
  2. 2. the layer of granitic and metamorphic rocks
  3. 3. the layer of earth found under the oceans
  4. 5. opening or vents where lava is
  5. 7. horseshoe shape where the pacific plates meet the plate tectonics
  6. 9. extensive systems of fractures and faults
  7. 11. movement of continents
  8. 13. glacial ice more than 50,000 square kilometers
  9. 17. the denser,weaker layer of the earth
  10. 18. the edge of a continent that lies under the ocean