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Plate Tectonics Test

Answer two questions from each section of questions.

  1. Explain the difference between the lithosphere and asthenosphere.
  2. Explain the difference between the crust and mantle.
  3. Explain the role of temperature-induced density differences in plate tectonics.

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  1. Explain how the fossil record supported Wegener's theory of continental drift.
  2. Explain how the glacial striations supported Wegener's theory of continental drift.
  3. Explain how rock formations (strata) supported Wegener's theory of continental drift.
 
  1. Explain why the seafloor has been described as a conveyor belt.
  2. Explain how radioactive dating of ocean rocks helped support the theory of seafloor spreading.
  3. Explain a complication with using ocean sediment thickness to estimate the ages of ocean crust.

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Give an example on the earth then draw and label a cross-section of

  1. an oceanic-oceanic convergence boundary.
  2. an oceanic-continental convergence boundary.
  3. a continental-continental convergence boundary.

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