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Across
  1. 2. 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.
  2. 5. boundaries/places where plates slide past each other, lithosphere is neither created nor destroyed, most are found on the sea-floor.
  3. 7. to the study of the earth's physical structure and substance.
  4. 11. floor spreading/the formation of new areas of oceanic crust, which occurs through the upwelling of magma at mid ocean ridges and its subsequent outward movement on either side.
  5. 12. boundaries/boundaries where two lithospheric plates converge, one subducts underneath the other, the subduction zone is where earthquakes occur.
  6. 14. matter that is carried by water or wind and deposited on the surface of the land or the bottom of a body of water, and may in time become consolidated into rock.
  7. 16. rigid outer part of the earth, consisting of the crust and upper mantle.
  8. 17. fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed on cooling.
  9. 19. remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
  10. 20. record produced by a seismograph.
Down
  1. 1. crust/ the relatively thick part of the earth's crust that forms the large landmasses. It is generally older and more complex than the oceanic crust.
  2. 3. tectonics/The theory that states that the Earth's outer crust, the lithosphere, is separated into plates that move over the asthenosphere
  3. 4. Water/water that collects on the surface of the ground.
  4. 6. regions of the earth where living organisms exist
  5. 8. boundaries/boundaries where two tectonics plates move away from each other. Earthquakes are common and magma rises to create a new oceanic crust as it diverges.
  6. 9. breakdown of rocks or minerals into smaller pieces from wind or water over a long period of time. Can be caused by mechanical or chemical weathering.
  7. 10. held underground in the soil or in pores and crevices in rock.
  8. 13. currents/a current in a fluid that results from convection.
  9. 15. instrument that measures and records details of earthquakes, such as force and duration.
  10. 18. process of eroding or being eroded by wind, water, or other natural agents.