Sea Floor Spreading and Plate Tectonics

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Across
  1. 5. scientist who names the large landmass Pangaea
  2. 7. rocks formed when molten lava hardens quickly after an eruption underwater
  3. 9. freshwater reptile fossils found in Africa, Asia, Antarctica, and India
  4. 12. plates moving away from one another
  5. 14. name of the super continent
  6. 16. occurs when the divergent boundary of continental to continental takes place
  7. 17. famous examples of a transform boundary
  8. 18. mirrored pattern on both of the sides of the mid-ocean ridge that spread apart
  9. 19. oceanic crust bending downward allowing part of the ocean floor to sink back into the mantle
  10. 20. freshwater reptile fossils found in South America and Africa
Down
  1. 1. ocean floor sinking beneath a deep ocean trench and back into the mantle
  2. 2. fern like fossil found in South America, Africa, India, Antarctica, and Australia
  3. 3. occurs when the divergent boundary of continental to oceanic takes place
  4. 4. plates sliding past one another
  5. 6. plates colliding into one another
  6. 8. adding materials to the ocean floor forming a crack in the ocean
  7. 10. seams forming mountain ranges that rise up from the ocean floor
  8. 11. continents moving slowly across Earths surface
  9. 13. device that used waves to measure distance to an object
  10. 15. any trace of an ancient living organism that's preserved in rock