Continental Drift and Plate Tectonics

123456789101112131415161718
Across
  1. 2. that at once all continents were joined
  2. 4. not caused by convergent boundaries
  3. 5. structures on Earths crust moving over the mantle
  4. 6. rigid outer part of Earth, consisting of the crust and upper mantle
  5. 7. made the speculations that the continents might have drifted
  6. 8. plates sliding past each other
  7. 11. proposed theory of continental drift
  8. 15. caused by divergent boundaries
  9. 17. causes seafloor spreading
  10. 18. caused by convergent boundaries
Down
  1. 1. Father of Plate Tectonics
  2. 2. changing climates during the past
  3. 3. layers of rocks across continents
  4. 9. places certain fossils are found
  5. 10. supercontinent
  6. 12. plates moving away
  7. 13. plates colliding
  8. 14. ocean floor sinks under
  9. 16. underwater mountain range