Science Chapter 4 - Plate Tectonic

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Across
  1. 2. when continents were all once joined ; Greek word for "All World."
  2. 4. the thin and solid outermost layer of the Earth above the mantle
  3. 6. a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle.
  4. 7. a machine that measures the times at which seismic waves arrive at different distances from an earthquake.
  5. 8. is a plastic layer of the mantle on which pieces of the lithosphere move.
  6. 10. a set of deep cracks that forms between two tectonic plates that are pulling away from each other.
Down
  1. 1. the boundary in which tectonic plates separate
  2. 3. an upward-arching fold in the Horizontal Stress Process
  3. 4. the hypothesis that states that the continents once formed a single landmass and drifted their present locations.
  4. 5. the central part of the Earth below the Mantle.
  5. 9. stress that occurs when forces act to stretch n object