Across
- 2. the layer of rock between the Earth's crust and core
- 3. a huge body of water that existed along with Pangaea
- 5. upward arching folds
- 8. the proces in which rock changes shape through states
- 10. a system of satellites used to measure plate tectonic movement
- 11. the solid outer layer that consists of the crust and upper rigid mantle
- 17. rock layers folded so that rock layers are horizontal
- 18. the sinking of regions of Earth's crust to lower elevations
- 19. the rising of regions to higher elevations
- 20. the central part of Earth
Down
- 1. a supercontinent that existed 245 million years ago
- 4. the soft layer of the mantle on which tectonic plates move
- 6. stress that occurs when forces squeeze an object
- 7. the surface along which rocks break and slide past each other
- 9. the strong lower part of the mantle between the asthenosphere and the outer core
- 12. stress that occurs when forces stratch an object
- 13. downward troughlike folds
- 14. the bending of rock layers due to stress
- 15. when crust slowly springs back to its original position
- 16. the outermost thin layer of the Earth above the mantle