Plate Tectonics & Seafloor Spreading

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Across
  1. 2. Thin, dense, and young crust
  2. 5. Molten rock that reaches the surface
  3. 6. A mountain that forms when molten rocks called magma comes out from a vent on the top
  4. 9. A sudden pressure that causes shaking on the earth’s surface
  5. 10. The innermost layer that is liquid inner and solid outer
  6. 11. Plate boundary that occurs when two plates come together/collide
  7. 12. Molten rock underneath the earth
  8. 13. Plate boundary that occurs when two plates move away from each other
  9. 14. The sideways and downward motion of plates
  10. 16. Thick, less dense, and mostly old crust
  11. 17. A crack in a plate
  12. 18. Plate boundary that occurs when two plates move past each other
Down
  1. 1. A supercontinent that included all continents way back then
  2. 3. Scientist who contributed to the plate tectonic theroy
  3. 4. A fracture zone between two big rock areas
  4. 7. The process that occurs at mid-ocean ridges
  5. 8. The theory explaining the structure of earth’s crust in large moving sections
  6. 11. The theory proposed by Alfred Wegener
  7. 12. Viscous layer that is mostly solid rock
  8. 15. The layer of earth we are on