plate tectonics

3. the layer of rock between earths crust and core
5. rising of regions of earts crust to higher elevations
7. the strong lower part of mantle between asthenosphere and outer core
9. drift the hypothesis that states that continents once formed a single landmass broke up and drifted to their present locations
10. the central part of earth below the mantle
11. the solid outer layer of earth that consists of the crust and rigid upper part of mantle
12. boundary the boundary formed by the collision of two lithospheric plates
14. a break in a body of rock along which one block slides relative to another
15. single large landmass made up of all the continents connected together that broke apart 200 million years ago
16. boundary the boundary between two tectonic plates that are moving away from each other
18. floor spreading the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies

1. boundary the boundary between tectonic plates that are sliding past each other horizontally
2. tectonics the theory that explains how large pieces of earths outermost layer called tectonic plates move and change shape
4. the sinking of regions of earths crust to lower elevations
6. the soft layer on which the tectonic plates move
8. the bending of rock layers due to stress
9. stress that occurs when forces act to squeeze an object
12. the thin and solid outermost layer of Earth above the mantle.
13. plate a block of lithosphere that consists of the crust and rigid outermost par of mantle
17. stress that occurs when forces act to stretch an object