Across
- 4. 2 plates move together
- 7. supercontinent containing all existing continents
- 9. The study of life
- 10. Lava comes out of it
- 13. hypothesis first proposed in 1960 by harry Hess
- 14. the rigid outer part of the earth, consisting of the crust and upper mantle.
- 18. a continuous elevated zone on the floor of major ocean basins
- 20. hypothesis which suggest that all present contents one assisted as a single supercontinent
Down
- 1. major landforms are created as a result of Earth's subterranean movements
- 2. continuous range of underwater volcanoes
- 3. boundary in which 2 plates move apart
- 5. luminous envelope of a star from which its light and heat radiate.
- 6. elevated areas of the sea floor
- 8. processes that deform earths crust
- 11. chain of volcanic island
- 12. earth shakes
- 15. big hill
- 16. narrow elongated depression of sea floor
- 17. relating to the ocean
- 19. occurs when an oceanic plate runs into a continental plate and slides beneath it.