Across
- 2. the innermost layer of the earth
- 3. caused by an earthquake or Earth vibration
- 5. sea-floor _________ is how a new lithosphere is created
- 7. a _________ plate is a rigid layer of the Earth's crust that is believed to drift slowly
- 9. molten rock in Earth's crust
- 11. ___________ boundary is between two plates moving away from each other
- 13. a squeezing force
- 14. outermost, rigid layer of the Earth
- 16. __________ boundary is between two colliding plates
- 17. a pulling force
- 19. outermost layer of the Earth
Down
- 1. ___________ boundary is between two plates that are sliding past each other
- 4. a geological process in which one edge of a crustal plate is forced sideways and downward into the mantle below another plate
- 6. layer between the crust and the core
- 8. soft layer of the mantle
- 10. continental _______ is a theory that continents drift apart
- 12. the bending of rock layers
- 15. _________ plate is a piece of the lithosphere that moves on the asthenosphere
- 18. a break in the Earth's crust