Plate Tectonics

3. At a convergent boundary two plates move _________________each other.
4. The name of the theory that describes how Earth’s surface changes today.
5. At a transform boundary two plates ______ past each other.
7. The underwater mountain range formed at a divergent boundary.
8. The name of the fault that is an example of a transform boundary.
10. The place where a convergent plate slides back down into the mantle is called a _______________zone.
13. The last name of a volcano in the U.S. that formed at a convergent boundary.
15. The transfer of heat by the movement of a heated fluid is called________________.
16. The type of plate boundary where two plates separate from each other.
20. The force that helps to pull plates back into the mantle.
21. The lithosphere is broken up into pieces called_______________.

1. Plates are broken up pieces of the ___________________.
2. The theory states that the plates move by _______ _________ in the mantle.
6. The theory of plate tectonics states that the plates are in constant slow_____________.
9. The type of landform that erupts lava and can happen at all boundaries except transform.
11. At a divergent boundary two plates _________from each other.
12. The type of plate boundary where two plates move towards each other.
14. The place where two plates meet.
17. The type of plate boundary where two plates slide past each other.
18. The shaking action that can happen at all types of boundaries is called an _______________.
19. The mountain range formed at a convergent boundary.