Across
- 7. - violent shaking of the ground caused when two chunks of the Earth immediately slip past another one
- 9. - a gigantic wave caused by an earthquake of underwater volcanic eruption
- 11. - molten rock that is underground
- 12. boundary - areas where plates slide past each other
- 13. currents - currents that transfer heat from one place to by mass flow of fluid such as water
- 15. - upper layer of the mantle and located under the lithosphere
- 17. - breakage between two plates of rocks
- 20. - a supercontinent that included almost all the landmasses of the world
Down
- 1. - an igneous, volcanic rock
- 2. - the point where an earthquake rupture starts
- 3. - supercontinent that broke up about 180 million years ago
- 4. - geological process in which the oceanic lithosphere is recycled into the Earth's mantle at convergent boundaries
- 5. - study of the deformation of rocks
- 6. - study of earthquakes
- 8. boundary - a tectonic boundary where two plates move away from each other
- 10. - large, irregularly shaped slab of solid rock that is composed of continental and oceanic lithosphere
- 14. boundary - a tectonic boundary where two plates move towards each other
- 16. - point on the Earth’s surface where seismic rupture begins
- 18. - igneous rock that is filled with quartz
- 19. - hot liquid that oozes out during and after a volcanic eruption