Plate Tectonics

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