Across
- 4. The layer after the outer core
- 5. Rock having solidified from lava or magma
- 8. The middle layer of earth
- 13. An abbreviation used by earth scientists, meaning "million years"
- 14. A region of extremely high pressure underlying the lithosphere
- 16. tectonics Slab of solid rock composed of both continental and oceanic lithosphere
- 20. A sudden violent shaking of the ground
- 24. The recording of the acceleration of the ground during an earthquake
- 25. Theory that the configuration of earth's continents was once different than it is today
- 27. Compare the size of earthquakes
Down
- 1. Where plates slide sideways from each other
- 2. A depression in Earth's crust
- 3. Measures and records details of earthquakes
- 6. Sub marine mountain ridges where new seafloor is created by seafloor spreading
- 7. mountain formed by plate tectonics filled with magma
- 9. A split between two bodies/plates that were once joined
- 10. The top layer of the earth
- 11. Any attempt to deform a solid
- 12. The belief of a one continent earth
- 15. An area of rock that has been bent by stress
- 17. An instrument that records the acceleration of the ground during an earthquake
- 18. The breaking down of rocks and minerals
- 19. Rock formed by accumulation or deposition
- 21. The peak ... is the largest increase in velocity
- 22. A dark coloured igneous rock
- 23. Earth sciences that combines aspects of geology and physics
- 26. A form of stress produced by a force that acts to stretch a material