Plate tectonics
Across
- 3. Pacific _____ __ ______. Zone of volcanically active mountain chains resulting from subduction on margins of Pacific Ocean.
- 7. Plate ___________.
- 9. Scientist who formalized theory of seafloor spreading.
- 10. Section of the Earth below the crust.
- 11. Seafloor __________.
- 13. Hawaiian Islands were formed by a stationary ___ _______.
- 19. Places where new seafloor is created.
- 20. where two plates move forward
Down
- 1. Largest plate.
- 2. The Earth's ___________ field reverses from time to time.
- 4. ___________ are formed via the process of collision.
- 5. where two plates move apart
- 6. where one plate slips laterally past another
- 8. Scientist who first proposed the theory that the continents drifted.
- 12. Fold in crust with an arch-like ridge.
- 14. Earth's supercontinent 300 million years ago.
- 15. ___________ continental margin does not coincide with a plate boundary.
- 16. Solid plastic layer of the mantle beneath the lithosphere.
- 17. Paleontologists noticed that these were the same on different continents even though the continents were separated by oceans.
- 18. ___________ zones. Places where the seafloor is forced under continental plates.