continental drift presentation1

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Post on 25-Jan-2015

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The theory of continental drift and evidence for supporting it.

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  • 1. Continental Drift
  • 2. Theory of Plate Tectonics Alfred Wegeners 1915 drawing of Pangaea
  • 3. Continental Drift
  • 4. How do Plates Move?
  • 5. Good Fit What is some Evidence to support his Theory
  • 6. Rocks & Mountains
  • 7. Fossils
  • 8. Sea Floor Spreading
  • 9. Age of the Sea Floor
  • 10. Evidence for the Theory
    • Continental shelves seem to fit together
    • Rock units and mountain ranges fit Pangaea
    • Fossil types fit Pangaea
    • Ocean research uncovered sea floor spreading
    • Radio-geology allowed us to date the age of rocks
    • Polarity of Rocks-Magnetic Evidence
  • 11. Why do we Care?
    • Curiosity
    • Explain landforms
    • Find valuable minerals
    • Explain and predict potential hazards