2.1 continental drift
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2.1 continental drift Presentation Transcript

  • 1. Plate Tectonics Ag Earth Science Mr. Silva
  • 2. Objective: Identify and describethe four pieces of evidence there are supporting the theory of continental drift.
  • 3. Biosphere ReviewWhat are the Three Parts of the Biosphere?
  • 4. Biosphere ReviewWhat sphere are we dealing with when discussing Plate Tectonics? The Geosphere
  • 5. Layers of the Earth• Take five minutes to draw and label the Earth’s layers in your notes.• These are terms we will use all year long, therefore you need to become familiar with them.
  • 6. Continental Drift• In 1912 a German scientist named Alfred Wegener proposed a hypothesis called Continental Drift.• He hypothesized that the continents once formed a single landmass.• He called it Pangaea, meaning “all land”
  • 7. Continental Drift
  • 8. 88
  • 9. Evidence of Continental Drift
  • 10. Evidence of Continental DriftA. Continental Puzzle: – The shorelines of continents look as though they could fit together like a puzzle.
  • 11. Evidence of Continental DriftB. Fossil Evidence: – Matching fossils of the same plants and animals were found on shorelines. (They couldn’t swim across the ocean.)
  • 12. Evidence of Continental DriftC. Geologic Evidence: – The age and type of rocks in coastal regions that are far apart from each other matched closely. – Mountain chains appear to continue on landmasses across the ocean.
  • 13. Evidence of Continental DriftD. Climatic (climate) evidence: – Debris from glaciers found in areas that are now hot. (Too hot to have glaciers). – Plant fossils found in areas where it is too cold for plants to grow. – Continents must have _____________ to their present locations
  • 14. Activity– Create a propaganda poster in Pages with one of the newsletter templates justifying the Continental Drift Theory.– Include the four pieces of evidence for continental drift.– Use photos to illustrate each piece of evidence in the poster.– This needs to be attractive and make me a believer of the Continental Drift Theory.– Due 10 minutes before the end of the period.