Plate Tectonics

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Across
  1. 3. Oceanic crust is destroyed
  2. 5. Earths crust and upper mantle are broken into sections
  3. 7. Less dense than oceanic crust
  4. 9. Plates that slide past each other
  5. 10. Thin layer in comparison to other three layers
  6. 11. Theory that combined continental drift and seafloor spreading
  7. 12. A movement of the ground that occurs when rocks inside the Earth break suddenly
  8. 13. Continents have slowly moved to their current locations
  9. 15. Theory that hot less dense below Earths crust rises toward the surface at the mid ocean ridges
  10. 17. The crust and upper mantle are combined
  11. 18. Plates that come together or collide
  12. 19. When rock breaks and moves along surfaces
Down
  1. 1. Plastic like layer below the lithosphere
  2. 2. Largest layer of the Earth
  3. 4. They occur when hot magma, solids,and gas erupt onto Earths surface
  4. 6. Plates that move or pull apart from each other
  5. 7. Cycle of heating, rising, cooling, and sinking
  6. 8. Portion of the Earths crust that lies beneath ocean waters
  7. 14. All land
  8. 16. Rock, basalt under the ocean