Erosion, Plate Tectonics, Earthquakes, and Geologic Time
Across
- 4. When two plates of oceanic lithosphere collide, the older, denser plate subducts under the other plate.
- 5. The succession of eras,periods, and epochs as considered in historical geography
- 6. When two plates move past each other horizontally this forms.
- 7. Are ground movements that occur when blocks of rock in earth move suddenly and release energy.
- 8. The process in which the surface of the earth is worn away.
- 9. Some pars of the Mantle become hotter than other parts. The hot parts rise as the cooler, denser materials sink and push the hotter materials upward. What is this process?
- 10. Stress that stretches rock and makes rock thinner.
- 13. The force of the cooler, denser rocks moving down and away from the ridge.What is this process?
- 14. A single large landmass formed about 245 million years ago.
- 15. When two plates collide this forms.
- 16. In this process, molten rocks from inside of earth rise through the cracks in the ridges, cools, and forms new oceanic crust.
- 18. When a plate of oceanic lithosphere collides with a continental lithosphere, the oceanic lithosphere subducts because it is denser
- 20. Stress that distorts a body by pushing different tectonic plates in opposite directions.
Down
- 1. When two plates move away from each other this forms.
- 2. Describes the large-scale movements of earth's lithosphere.
- 3. When two plates of continental lithosphere collide, they buckle and thicken(creates mountains)
- 11. Where two or more Tectonic Plates meet.
- 12. Stress that shortens or squeezes an object.
- 17. A break in Earth's crust along which blocks of rock move.
- 19. At subduction zones, a denser plate sinks beneath another, less dense plate. As it sinks, the leading edge of the plate pulls the rest of the plate with it. What is this process?