Tectonic Plates

3. a tectonic plate that includes the continental crust of South America and the oceanic crust extending to the Mid-Atlantic Ridge
8. the process in which a denser plate is pushed downward beneath a less dense plate when plates converge
10. a depression of Earth's surface in which an ocean lies
12. the place where two different plates have contact
15. a tectonic plate division of the lithosphere that is composed entirely of oceanic crust and lies beneath the Pacific Ocean
17. a place where two tectonic plates move away from each other
18. a tectonic plate division of the lithosphere that includes the continental crust of Antarctica and the surrounding oceanic crust

1. huge piece of crust that slowly moves on the upper, ductile part of the mantle
2. a place where two tectonic plates slide past each other
4. a tectonic plate division of the lithosphere that includes the continental crust of Greenland, North America, and Siberia and the surrounding oceanic crust
5. event in which molten rock spews out from the mantle to the surface of Earth as ash, lava, and gases
6. major geological event that occurs when continental plates of equal density converge, resulting in mountain chains
7. a tectonic plate division of the lithosphere including the continental crust of India and Australia and the surrounding oceanic crust
9. a place where two tectonic plates move toward each other and collide
11. a tectonic plate division of the lithosphere including most of the landmasses of Europe and Asia
13. a tectonic plate division of the lithosphere that includes the continental crust of Africa and the surrounding oceanic crust
14. major geological event that occurs when plates shift suddenly and release stored energy
16. ridges formed from new crustal material at diverging oceanic boundaries