Plate Tectonics

5. core The layer of the Earth’s core made from liquid iron and nickel
7. boundary Where two tectonic plates move away from each other
8. Drift The movement of continents from the motion of tectonic plates
10. crust The rigid, rocky outer layer of the planet
12. An opening in the Earth’s crust where lava, volcanic ash, and gas escape.
13. of Fire A horseshoe-shaped zone around the Pacific Ocean that has most of the world's earthquakes and volcanoes
15. A shaking of the ground caused by sudden movement of materials below the Earth's surface
19. When plates move towards each other and collide.

1. A fracture in the Earth’s crust where tectonic plates move relative to each other.
2. The force exerted on a surface by the air above it as gravity pulls it to Earth
3. spot A place with unusually hot mantle material located deep within the Earth
4. Plate The plate the makes up the surface of the Earth.
6. Molten rock that has erupted on the surface of the Earth
8. Tectonic plates being pushed together
9. boundary Where two tectonic plates move towards each other, colliding
11. The solid outer layer of the Earth, composed of the crust and upper mantle.
14. Molten, hot liquefied rock located below the Earth’s surface
16. A supercontinent made up of all the continents together
17. boundary Where two or more tectonic plates meet
18. floor spreading The geological process where one tectonic plate slides and sinks beneath each other