VCB- Plate Tectonics

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Across
  1. 1. the relatively thick part of the earth's crust that forms the large landmasses
  2. 2. a mountain range separating the plains of the Indian subcontinent from the Tibetan Plateau
  3. 3. Volcanic islands occur in ocean basins (such as the Hawaiian Islands) or on or near ocean ridges
  4. 9. the process by which new oceanic lithosphere (sea floor) forms when magma rises to Earth's surface at mid-ocean ridges and solidifies, as older, existing sea floor moves away from the ridge
  5. 17. located along the floor of the Atlantic Ocean, and part of the longest mountain range in the world
  6. 19. any movement of matter that results from differences in density; may be vertical, circular, or cyclical
  7. 20. a long, seismically active submarine ridge system situated in the middle of an ocean basin and marking the site of the upwelling of magma associated with seafloor spreading.
  8. 21. the relatively thin part of the earth's crust which underlies the ocean basins
  9. 22. a sudden and violent shaking of the ground as a result of movements within the earth's crust or volcanic action.
  10. 23. region in which a portion of a tectonic plate sinks beneath another plate into the Earth's interior
  11. 24. a region around much of the rim of the Pacific Ocean where many volcanic eruptions and earthquakes occur
Down
  1. 1. a number of volcanoes in a volcanic arc in western North America
  2. 4. forms the tectonic boundary between the Pacific Plate and the North American Plate
  3. 5. the boundary between tectonic plates that are sliding past each other horizontally
  4. 6. a line of mountains connected by high ground
  5. 7. one edge of one crustal plate is forced below the edge of another
  6. 8. the boundary between two tectonic plates that are moving away from each other
  7. 10. to meet at a point
  8. 11. a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle
  9. 12. the boundary' between tectonic plates that are colliding
  10. 13. a lowland region that forms where Earth's tectonic plates move apart, or rift.
  11. 14. going in different directions; separating.
  12. 15. a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust
  13. 16. a long, narrow, deep depression in the ocean floor, typically one running parallel to a plate boundary and marking a subduction zone
  14. 18. a boundary between two or more plates