Plate Tectonics
Across
- 3. the layer of the earth made mostly of iron and contains small amounts of nickel
- 6. type of stress that occurs when an object is squeezed
- 10. tectonic plates fit together like pieces of this type of puzzle
- 11. theory that the Earth's lithosphere is divided in tectonic plates that move around
- 12. boundary between two plates moving horizontally past each other
- 14. pieces of the lithosphere that move around
- 17. made up of solid rock that flows very slowly
- 19. the rising of regions of the Earth's crust due to high elevations
- 20. process by which rock changes because of stress
- 22. boundary formed by two plates moving away from each other
Down
- 1. stress when forces act to stretch an object
- 2. boundary formed by the collision of two plates
- 4. Greek for "all earth"
- 5. Spreading where the new ocean floor is formed by magam rising towards the surface and solidifies
- 6. the theory that suggests the continents at one point were all one big land mass
- 7. strong, lower part of the mantle
- 8. layer of the earth that conists of the crust and upper part of the mantle
- 9. the surface along where rocks break and slide past each other
- 13. Sinking of the Earth's crust in lower elevations
- 15. the outermost layer of the earth
- 16. the types of waves that are produced by an earthquake
- 18. the layer of the earth that contains most of the earth's mass
- 21. bending of rock layers due to stress