plate tectonics
Across
- 3. parallel pattern of rock material found at identical locations across the Mid-Atlantic Ridge
- 6. the amount of matter in a given space or volume
- 7. when a denser plate is pushed down and beneath a less dense plate
- 9. solid fragments of weathered rock are eroded and then dropped into a new place
- 12. when two tectonic plates move toward each other and collide
- 15. mechanical or chemical processes that break rocks into smaller pieces
- 16. process by which water, ice, wind, and gravity remove and transport sediments
- 19. tectonic plates that lie under surface land masses
- 20. seafloor mountain system formed by divergent boundaries
Down
- 1. 1st theory describing the history of Earth's Surface
- 2. Supercontinentat that incorporated most all of the landmasses on Earth
- 4. long crack in the surface of the Earth
- 5. 2nd theory describing the history of the Earth's surface
- 8. when two plates move away from each other
- 10. photos or images taken of Earth from space
- 11. circular movement of fluids caused by the rising of hotter, less dense fluid and the falling of cooler, denser fluid
- 13. huge pieces of lithosphere that slowly move on the asthenosphere
- 14. Tectonic plates that are at the bottom of the ocean
- 17. distance above sea level
- 18. when twon plates slide past each other