Plate Boundaries

4. mountains formed by oceanic-continental
6. continental crust collides with oceanic crust
7. a boundary in which two plates move apart
8. supercontinent containing all existing continents
11. a narrow, elongated depression of the seafloor
16. divergent boundaries that may cause landmass to split into two or more segments
17. occurs when igneous rocks melt over a temp range
18. linear zones of irregular topography on deep-ocean floor
19. elevated areas of sea floor characterized by high heat
20. a boundary in which two plates move together

1. chain of volcanic islands generally located by oceanic-oceanic
2. largest tectonic plate
3. two oceanic slabs converge
5. proposing Earth’s outer shell consists of individual plates that interact in various ways
9. hypothesis proposed by Harry Hess
10. processes that deform Earth’s crust to create structural features
12. Primary driving force for movement of tectonic plates
13. continuous elevated zone on the floor of all major ocean basins
14. hypothesis suggested all present continents once existed as one supercontinent
15. a boundary in which two plates slide past one another