Across
- 3. the top layer of oceanic crust is made of _____________, sand, and other sediments
- 4. folded rocks forming mountains
- 8. crust beneath the oceans
- 10. the fastest seismic waves
- 11. layer of the mantle that is mostly solid
- 12. created by heat from the core, this makes using a compass possible
- 15. mantle layer that is between the other two layers
- 18. layer of the upper mantle made of rock material that flows slowly, like putty
- 19. ancient land masses made of crystalline rocks
- 20. layer of the mantle that is hot and flexible
- 22. boundary between the mantle and the crust
- 24. crust on which the continents rest
- 25. currents in the mantle caused by differences in heat
Down
- 1. the liquid layer of the core
- 2. most common rock in continental crust
- 5. the second layer of oceanic crust is mostly made of ________
- 6. the ability of rock to flow and change shape
- 7. deep depressions filled with sedimentary rocks
- 9. the thinnest layer of the earth
- 13. s waves can only travel through this type of matter
- 14. this solid portion of the earth is made of an iron-nickel alloy
- 16. outermost layer of the mantle and the crust
- 17. the central portion of the earth
- 21. layer makes up most of the earth's volume and mass
- 23. the bottom layer of oceanic crust is mostly made of ________