Plate Tectonics

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Across
  1. 1. The outer part of the earth.
  2. 7. Upper layer of the earths mantle, below the lithosphere.
  3. 8. The solid, outermost layer of the earth, lying above the mantle.
  4. 10. Liquid mix of elements, mostly iron and metal.
  5. 11. drift Gradual movement of the continents.
  6. 12. A large scale that processes affecting the earths crust.
  7. 13. The asthenosphere is also__________________.
  8. 14. Made up of iron and nickle.
  9. 15. Usually caused when rock underground suddenly breaks along a fault.
  10. 16. A large chunk of crust.
  11. 18. crust The relatively thin part of the earth's crust which underlies the ocean basins.
  12. 19. boundaries Where plates slide past each other.
Down
  1. 2. This acts like a hard and rigid shell compared to earths mantle.
  2. 3. The movement of the edge of the plate of the earth's crust.
  3. 4. Where two plates are moving apart.
  4. 5. currents A fluid that results from convection.
  5. 6. A super-continent that moved throughout the years.
  6. 9. A major fault separating blocks of the earth's surface.
  7. 11. Where two plates are colliding.
  8. 17. Mountain or hill that explodes.