Across
- 2. the belief that all the contents made one giant land mass
- 6. this is the second layer of the earth
- 7. _________ mantle
- 10. these plates along with the mantle are located in the _________
- 12. propoesed the theory of sea floor spreading
- 14. the earths crust is made of _____________ plates
- 15. when the earth "swallows" up the old crust
- 18. a Rift Valley is formed when this boundary happends
- 19. when magma reaches the earth surface
- 20. flats are a result of this boundary
Down
- 1. the person who cam up with the idea of Pangea
- 3. the upper/lower mantle and the mantle is a part of the _______
- 4. this is the third layer of earth
- 5. the result of two plates rubbing against each other
- 8. the mantle's state of mater a a solid with _______
- 9. one of the two types of techtonic plates (land)
- 11. the other type of techtonic plate (ocean)
- 13. mountains, volcanoes and deep sea trenches form with this boundary
- 16. the outermost layer of the earth
- 17. _____core, the last layer