Plate Tectonics

2. wave, Transverse seismic waves that travels through the Earth
4. boundary, Where plates are colliding with each other
5. A zone where Earth's crust and mantle and being pulled apart
8. The Earth's crust AND upper mantle, it's tectonic plates
10. The layer beneath the Earth's crust
13. pull, When plates are pulled apart at mid-ocean ridges
14. A huge wave in the ocean caused by an earthquake on the sea floor
18. plate, A section of the Earth's crust that moves about on the Earth's surface
19. spot, An isolated place away from plate boundaries where lots of magma is collected
20. The point on the Earth's surface directly above the focus of an earthquake
21. The centre of the Earth
24. The layer beneath the Earth's crust
25. Molten rock that has erupted onto the Earth's surface
27. crust, Crust that forms the ocean floor
28. Molten rock below the Earth's surface

1. A place where extremely hot material from inside the Earth erupts at the surface
3. The place below the ground where the earthquake begins
6. arc, A chain of islands formed at the edges of plate boundaries, where one plate subducts
7. An instrument that detects the seismic waves caused by an earthquake
9. When one plate sinks below another during a collision
11. Rapid movement of the ground, usually up and down
12. push, When older crust is pushed below new ocean crust and squeezes the plates sideways
15. mountain, Mountains formed by crust crumpling upwards as plates collide
16. wave, A longitudinal seismic wave that travels fast through the Earth
17. crust, The crust that forms the ocean floor
18. A depression in the ocean floor
21. drift, When continents separate by moving across the Earth's surface
22. boundary, Where plates are sliding parallel to each other but in opposite directions
23. striping, Patterns of magnetism trapped in rocks on each side of plate boundaries
26. boundary, Where plates are moving apart in opposite directions