Across
- 1. usually occur at transform boundaries
- 4. outer shell of earth
- 5. place between plates
- 7. ridgid but moving pieces of the earths surface
- 9. broken parts of the upper mantle
- 10. very center of earth
- 13. plates coming together
- 16. earth before continents moved
- 18. suggested seafloor spreading
- 19. rocks in crust move and break
Down
- 2. layer of mantel that underlies the lithosphere
- 3. the formation of new areas of oceanic crust
- 6. plates pulling apart
- 8. theory of formation and movment of the earths plates
- 11. plates sliing past one another
- 12. evidence of continental drift- ________ fit of all continents
- 13. theory that all continents are fragments of pangaea
- 14. came up with theory of continental drift
- 15. on earths surface
- 17. inside earth