Across
- 4. a large moveable segment of the lithosphere
- 8. the upper layer of earths interior, including the crust and the upper brittle portion of the earths mantle
- 10. the study of tectonism, including it’s causes and effects, most notably mountain building
- 11. boundaries between plates
- 12. the otter most layer of the earth
- 14. two plates move away from one another
- 15. sub marine mountain ridges where new seafloor is created by seafloor spreading
- 16. thick, dense, middle layer of the earth
- 17. a form of stress produced by a force that acts to stretch a material
- 18. an area of rock that has been bent by stress
- 20. the theory that the configuration of the earths continents was once different than it is today
Down
- 1. a region of extremely high pressure underlying the lithosphere, where rocks are deformed by enormous stresses.
- 2. two plates slide past one another going in different directions
- 3. the theory that seafloor crack open along the crests of mid-ocean ridges and that new seafloor forms in those areas
- 5. the center of the earth
- 6. a split between two bodies (for example, two plates)that once was joined
- 7. any attempt to deform a solid
- 9. a long trough bounded by two or more faults
- 13. two plates move towards one another
- 19. an area of fracturing between rocks that has been bent by stress