Across
- 4. Glaciers cover most of..
- 7. Crust Is being made at the Mid-Ocean ridges
- 8. Thinnest layer of Earth
- 11. found high up in the mountains
- 14. The... is approximately 4.5 billion years old
- 15. Are areas in the boundaries that are "super active"
- 16. Core 2nd thinnest
- 17. The process of new crust and destroyed/recycled
- 19. Glaciers abrade and ____ rocks and sand as they move over the land
- 20. how many layers of the Earth
- 21. How many major plates?
Down
- 1. Thickest layer
- 2. Glaciers are also responsible for the formation of valleys and types of..
- 3. They cover whole continents
- 5. Long periods of this is called..?
- 6. Recycled at the Deep-Ocean Trenches
- 9. Moves extremely slow
- 10. core 2nd thickest
- 12. The Earths crust is..
- 13. The theory of Continental Drift was put forward by
- 18. Glaciers are like..
- 21. How many main types of glaciers