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Across 3. the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies 5. the layer of rock between the Earth’s crust and core 7. the soft layer of the mantle on which the tectonic plates move 9. the rising of regions of the Earth’s crust to higher elevations 10. a break in a body of rock along which one block slides relative to another 14. the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations 15. the boundary between two tectonic plates that are moving away from each other 16. a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle 17. the thin and solid outermost layer of the Earth above the mantle 18. the strong, lower part of the mantle between the asthenosphere and the outer core

Down 1. the boundary formed by the collision of two lithospheric plates 2. the central part of the Earth below the mantle 4. the boundary between tectonic plates that are sliding past each other horizontally 6. stress that occurs when forces act to squeeze an object 8. the theory that explains how large pieces of the Earth’s outermost layer, called tectonic plates, move and change shape 10. the bending of rock layers due to stress 11. the sinking of regions of the Earth’s crust to lower elevations 12. stress that occurs when forces act to stretch an object 13. the solid, outer layer of the Earth that consists of the crust and the rigid upper part of the mantle