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Restless Continents

Restless Continents. Alfred Wegener. Theory of Continental Drift Continents formed a single landmass Broke-up and drifted to current location Explanation for similar fossils in different parts of the world. http://pubs.usgs.gov/publications/graphics/Fig2-5globes.gif. “All Earth”. Pangaea

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Restless Continents

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  1. Restless Continents

  2. Alfred Wegener • Theory of Continental Drift • Continents formed a single landmass • Broke-up and drifted to current location • Explanation for similar fossils in different parts of the world http://pubs.usgs.gov/publications/graphics/Fig2-5globes.gif

  3. “All Earth” • Pangaea • Existed 245 million years ago • Split into two large continents (Laurasia and Gondwana) 180 million years ago • Split again into the landmasses we have today 65 million years ago

  4. Mid-Ocean Ridges • Sea-floor spreading-places where new oceanic lithosphere forms • Magnetic Reversal-Earth’s magnetic poles change places

  5. Sea-Floor Sreading http://www.funsocialstudies.learninghaven.com/images/plates.gif

  6. Your Pangaea • Label the continents on the provided pictures • Color the continents • Cut out the continents • Fit the pieces together to make Your Pangaea • Wait for further instructions • Glue Pangaea together • Complete again with the pieces moved apart.

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