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