Plate Tectonic Unit Vocabulary

2. The downward movement of an oceanic plate beneath another plate.
5. The large underwater mountain range formed by plate tectonics.
7. The theory that explains the movement of Earth's plates.
10. The name for the boundary between two tectonic plates that are moving apart.
11. Deep, steep depressions in the ocean floor, often formed by subduction zones.
13. A type of fault caused by compression in Earth's crust.
18. A rigid outer part of the Earth divided into plates.
19. A crack in the Earth's crust formed by tension and pulling apart.
21. The type of fault that slides horizontally.
22. The phenomenon where two tectonic plates collide and one plate sinks below the other.
23. A type of boundary where plates slide past each other horizontally.
24. The process responsible for creating large mountain ranges over long periods of time.

1. These form when magma escapes from Earth's mantle.
3. movements of molten rock within Earth's mantle, responsible for driving plate tectonics.
4. A method used to map the ocean floor by emitting sound waves.
6. The process of crust formation at divergent boundaries in the ocean.
8. The type of boundary where plates move toward each other.
9. The supercontinent that existed millions of years ago.
12. A system of underwater springs often found near mid-ocean ridges.
14. process where plates move apart and create new crust.
15. A break in the Earth's crust where plates move.
16. The geological feature formed where tectonic plates pull apart, like the East African Rift.
17. Earth movements caused by tectonic stress, leading to ground shaking.
20. The edge where two tectonic plates meet.