Plate Tectonics
Across
- 4. The crust that forms the ocean floor
- 8. When plates are pulled apart at mid-ocean ridges
- 9. The layer beneath the Earth's crust
- 10. When older crust is pushed below new ocean crust and squeezes the plates sideways
- 12. When one plate sinks below another during a collision
- 14. The place below the ground where the earthquake begins
- 15. An instrument that detects the seismic waves caused by an earthquake
- 21. A chain of islands formed at the edges of plate boundaries where one plate subducts
- 24. A place where extremely hot material from inside the Earth erupts at the surface
- 26. Where plates are moving apart in opposite directions
- 27. A section of the Earth's crust that moves about on the Earth's surface
- 29. Rapid movement of the ground, usually up and down
- 30. crust Crust that forms the ocean floor
Down
- 1. Where plates are colliding with each other
- 2. Where plates are sliding parallel to each other but in opposite directions
- 3. A huge wave in the ocean caused by an earthquake on the sea floor
- 5. mountain Mountains formed by crust crumpling upwards as plates collide
- 6. The point on the Earth's surface directly above the focus of an earthquake
- 7. When continents separate by moving across the Earth's surface
- 11. An isolated place away from plate boundaries where lots of magma is collected
- 13. The centre of the Earth
- 16. Transverse seismic waves that travels through the Earth
- 17. A zone where Earth's crust and mantle and being pulled apart
- 18. Patterns of magnetism trapped in rocks on each side of plate boundaries
- 19. The Earth's crust AND upper mantle, it's tectonic plates
- 20. A longitudinal seismic wave that travels fast through the Earth
- 22. The layer beneath the Earth's crust
- 23. Molten rock that has erupted onto the Earth's surface
- 25. Molten rock below the Earth's surface
- 28. A depression in the ocean floor