science
Across
- 4. the middle layer of the earth
- 6. the objects of something
- 7. the theory that hary hess developed
- 13. plate spread apart
- 14. the there that alfred wvegner came up with
- 17. earth ___________ of many things
- 18. the outermost layer
- 19. when two plates slide past one another
Down
- 1. the layer that has the crust and upper mantle
- 2. the hardest part of the core
- 3. when two plates come together
- 5. innermost layer of the earth
- 8. a crack in the earth from a earthquake
- 9. zones where plates subduct
- 10. the layer that has the upper and lower parts of the core
- 11. the liquid part of the core
- 12. has most to all of the mantle
- 15. the many pieces of the earth
- 16. when something squeeze