Across
- 1. the way layers behave due to pressure and heat
- 3. this semi-liquid is extremely hot
- 5. this layer is rigid due to high pressure, it is the lower mantle
- 6. this is the thinnest layer of the earth
- 11. beneath the lithosphere
- 12. this is the deepest layer of the earth
- 13. this theory states that continents move across the earth overtime
- 14. this is the largest layer of the earth
- 19. this layer is made of the crust and holds continental and oceanic plates
- 21. this event happens unpredictably and causes earth's poles to swap
- 22. this mineral records earth's magnetic polarity when it was deposited
- 23. this type of boundary spreads apart
- 24. this type of invisible field surrounds the earth
Down
- 2. elements or materials that layers are made from
- 4. this scientist mapped out the mid-atlantic ridge by hand
- 7. makes up oceanic crust
- 8. makes up continental crust
- 9. this type of boundary comes together
- 10. this type of crust is made from mostly granite
- 14. this is used to describe a solid that has been turned into almost liquid
- 15. this natural event is caused by the movement of tectonic plates
- 16. this type of arc is formed above a subduction zone
- 17. this is formed by seafloor spreading
- 18. these currents cause continents to move
- 20. this person proposed continental drift