Plate Tectonics
Across
- 2. colliding
- 3. makes up 66% of the Earth
- 5. Alfred Wegener discovered what?
- 7. soft plastic-like layer
- 8. strong,lower part of the mantle
- 10. made of iron and nickel
- 12. hottest layer on Earth
- 13. makes up 1% of the Earth
- 14. a fracture or zone between 2 blocks
- 17. Harry Hess discovered what?
- 18. only layer which is liquid
- 19. slide past each other
- 20. explains how large pieces of the crust move
Down
- 1. move away from each other
- 4. rigd upper part of the mantle
- 6. large pieces of Earth's crust
- 9. the sinking regions of the Earths crust
- 11. properties involve reaction to applied force
- 15. act to squeeze an object
- 16. nature of something's ingredients