Across
- 2. the shaking, wave like movement of the ground in an earthquake
- 5. A deep trench in the ocean floor, much deeper than the rest of the ocean floor
- 7. The process of new crust forming at the ocean ridges and spreding outwards
- 8. the point on the earths surface directly above the surface of an earthquake
- 9. the crust that forms the continents
- 13. process of continents breaking up, subsiding and allowing into the sea
- 14. an instrument that detects the seismic waves from an earthquake
- 16. where the crust is sinking down into the earth
Down
- 1. The theory that the earth's crust is cracked into several pieces and move across the asthenosphere.
- 3. molten rock below the earths surface
- 4. the rapid movement of the ground, usually back and forth and up and down in a wave motion due to the movement of tectonic plates
- 6. The movement of the earths contineents relative to each other
- 10. the crust that forms the ocean floor
- 11. molten rock that has erupted on the earths surface
- 12. a huge wave in the ocean caused by an earthquake occurring on the seafloor
- 15. a place where extremely hot material from inside the earth erupts at the surface