Plate Tectonics Review

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Across
  1. 6. reversal happens when the flow in the outer core changes, and Earth's magnetic field changes direction
  2. 8. When two plates collide, the denser plate eventually descends below the other, less-dense plate in a process called subduction
  3. 10. sreading the theory that explains how new oceanic crust is formed at ocean ridges
  4. 11. a technological advance that was used to study the ocean floor
  5. 12. of plate Tectonics Which states the Earth's Crust and rigid per mantle are broken into enormous slabs called plates
  6. 13. push As the older portion of the seafloor sinks, the weight of the uplifted ridge is thought to push the oceanic plate toward the trench formed at the subduction zone in a process called ridge push
  7. 14. boundary A region where two plates slide horizontally past each other
Down
  1. 1. name of the super continent
  2. 2. boundaries Where two tectonic plates are moving toward each other
  3. 3. the study of the history of Earth's magnetic
  4. 4. valley When continental crust beings to separate, the stretched crust forms a long narrow depression
  5. 5. an imaginary line on a map that shows points that have the same age
  6. 7. boundaries Regions where two tectonic plates are moving apart
  7. 8. pull Determines the movement of tectonic plates
  8. 9. drift a theory that states all the continents were once one big land mass, called "Pangea"