chapter 7 vocab
Across
- 4. boundary, the boundary between two tectonic plates that are moving away from each other
- 5. the strong, lower part of the mantle between the asthenosphere and the outer core
- 7. stress that occurs when forces act to squeeze an object
- 9. the soft layer of the mantle on which the tectonic plates move
- 10. stress that occurs when forces act to stretch an object
- 13. spreading, the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies
- 18. the bending of rock layers due to stress
- 19. plate, a block of the crust that consists of the crust and the rigid outermost part of the mantle
Down
- 1. drift, the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations
- 2. the central part of the Earth below the mantle
- 3. the solid, outer layer of the Earth that consists of the crust and the rigid upper part of the mantle
- 6. the thin and solid outermost layer of the Earth above the mantle
- 8. the sinking of regions of the Earth's crust to lower elevations
- 11. boundary, the boundary formed by the collision of two lithospheric plates
- 12. the thin layer of rock between the Earth’s crust and core
- 14. a break in a body of rock along which one block slides relative to another
- 15. boundary, the boundary between tectonic plates that are sliding past each other horizontally
- 16. tectonics, the theory that explains how large pieces of the Earth's outermost layer, called tectonic plates, move and change shape
- 17. the rising of regions of the Earth's crust to higher elevation