Across
- 5. A plate where extremely hot material from inside the earth erupts at the surface
- 7. The point of the earths surface directly above the focus of an earthquake
- 8. The crust that forms in the continent
- 9. Tectonic plates causing the earth to have rapid movement of the ground, usually back and fourth and up and down in a wave motion
- 10. The theory that the earths crust is cracked into large pieces that move
- 14. Molten rock below the earths surface
- 15. spreading The process of new crust forming at the ocean ridges and spreading outwards
- 16. The process of continents breaking up, subsiding and allowing in the sea
Down
- 1. The crust that forms the ocean floor
- 2. Where the crust is sinking down into the earth
- 3. An instrument that detects the seismic waves from an earthquake
- 4. A huge wave in the ocean caused by an earthquake on the seafloor
- 6. The separation of continents drifting across the ocean
- 11. A deep trench in the ocean floor that is deeper than the rest of the ocean floor
- 12. The shaking, wave-like movement of the ground in an earthquake
- 13. Molten rock that has erupted onto the earths surface