Across
- 2. boundary/ the boundary between tectonic plates that are sliding past each other horizontally
- 4. the solid, outer layer of the earth that consists of the crust and the rigid upper part of the mantle
- 5. stress that occurs when forces act to squeeze an object
- 7. the bending of rock layers due to stress
- 8. fault/ opposing forces cause rock to break and move horizontally
- 10. tectonics/ the theory that explains how large pieces of the Earth's
- 12. layer
- 14. mountains/ When rock layers are squeezed together and pushed upward.
- 17. boundary/ the boundary formed by the collision of two lithospheric plates
- 18. mountains/ Mountains that form when magma erupts onto Earth's surface.
- 20. the thin and solid outermost layer of the Earth above the mantle
- 21. a break in a body of rock along which one block slides relative to another
- 22. the layer of rock between the earth's crust and core
Down
- 1. spreading/ the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies
- 3. and the outer core
- 5. drift/ the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations
- 6. The strong, lower part of the mantle between the
- 7. mountains/ Form when tension causes large blocks of rock to drop down in relation to other rocks. Tilting of rock layers can occur as tension pulls the rock layers apart.
- 9. fault/ A fault in which the hanging wall moves up relative to the foot wall
- 11. plate/ a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle
- 13. Stress that occurs when forces act to stretch an object
- 15. boundary/ the boundary between two tectonic plates that are moving away from each other
- 16. the central part of the Earth below the mantle
- 19. fault/ a fault in which the hanging wall moves down relative to the footwall