Tectonic Plates

3. continental _______ is a theory that continents drift apart
5. caused by an earthquake or Earth vibration
6. the bending of rock layers
7. molten rock in Earth's crust
10. a squeezing force
13. outermost, rigid layer of the Earth
14. a pulling force
15. ___________ boundary is between two plates that are sliding past each other
16. a geological process in which one edge of a crustal plate is forced sideways and downward into the mantle below another plate
17. __________ boundary is between two colliding plates
18. layer between the crust and the core

1. outermost layer of the Earth
2. a _________ plate is a rigid layer of the Earth's crust that is believed to drift slowly
4. _________ plate is a piece of the lithosphere that moves on the asthenosphere
6. a break in the Earth's crust
8. soft layer of the mantle
9. the innermost layer of the earth
11. sea-floor _________ is how a new lithosphere is created
12. ___________ boundary is between two plates moving away from each other