Investigating Forces that Change the Earth Week 2

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Across
  1. 1. depressed areas of land–scoured and washed out by the conspiring forces of gravity, water, and ice
  2. 3. a fracture or zone of fractures between two blocks of rock
  3. 6. Crustal features. include those expressed on the surface, (such as mountains, rivers, and lakes) as well as those not as visible (such as volcanic feed pipes, earthquake fault lines, Geological formations, and aquifer formations.)
  4. 9. a path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes.
  5. 10. long, narrow depressions on the seafloor that form at the boundary of tectonic plates where one plate is pushed, or subducts, beneath another.
  6. 11. an elevated region with a central valley on an ocean floor at the boundary between two diverging tectonic plates where new crust forms from upwelling magma
Down
  1. 2. the solid, outer part of Earth
  2. 4. the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
  3. 5. a region in which a portion of a tectonic plate sinks beneath another plate into the Earth's interior
  4. 7. the geological process in which earthen materials are worn away and transported by natural forces such as wind or water
  5. 8. areas where the volcano is rifting or splitting apart.