Across
- 3. clue of continental drift
- 6. a number of rigid, but moving, pieces of the earths surface
- 8. plate _______
- 9. theory of the formation and movement of the plates that cover the earths surface
- 11. forms when two lithosphere plate come together
- 16. section of earth below the crust
- 17. alfred ______
- 18. forms when two lithospheric plates slide past each other
Down
- 1. the outer shell of earth that extends to a depth of 100km
- 2. the theory that all continents are fragments of pangaea now drifting apart
- 4. seafloor
- 5. the partially melted layer of the mantle that underlies the lithosphere
- 7. where new seafloor is created
- 10. outer most layer of earth
- 11. ______ drift
- 12. center of earth
- 13. layer of earth after inner core
- 14. forms when two lithospheric plates move apart
- 15. states that youngest rocks of ocean floor are at diverging boundaries, moving outward