Across
- 2. means sturdy and strong
- 5. this semi solid is what plates move on
- 8. the security of ultraviolet waves hitting humans
- 9. technology that is used to measure the ocean floor
- 11. the middle most part of the earth
- 12. the crust where the ocean is on top of
- 14. the currents that drive the plates
- 16. this is what is below the crust
- 17. he found plate tectonics
- 19. heated rock in the earth
- 21. when the magnetic poles reverse
- 23. the process of one plate going under the other
- 24. two plates pushing against each other
- 25. two plates separating from each other
Down
- 1. this is where the magma comes out and spreads the plates
- 3. this is what we live on today
- 4. two plates grinding against each other
- 6. what is created by a transform boundary
- 7. the supercontinent where all of the plates merged into one
- 10. the mineral that tells us when the magnetic poles flipped
- 13. the crust that continents are on
- 15. the plates that continents are on
- 18. this is what makes up the plates
- 20. the area in the mantle where the plates get moved and recycled
- 22. the only liquid layer in earth