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DO NOW

DO NOW. DO NOW. Get out your foldable Explain (using complete sentences) Wegener’s theory of continental drift. What are the 4 pieces of evidence that support his theory? - DON’T KNOW? Look in your NOTES. Layers of the Earth. How do plates move?

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DO NOW

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  1. DO NOW

  2. DO NOW • Get out your foldable • Explain (using complete sentences) Wegener’s theory of continental drift. • What are the 4 pieces of evidence that support his theory? - DON’T KNOW? Look in your NOTES

  3. Layers of the Earth • How do plates move? • Movement driven by heat within the Earth • Hot material move up, while cool material moves down (convection)

  4. Types of Plate Boundaries • Divergent Boundaries • Convergent Boundaries • Transform Fault Boundaries

  5. Candy Continents • Use the tip of the plastic spoon to make 5 or six cracks along and across the top of your candy bar • Cracked pieces of chocolate represent the Earth’s Crustal plates.

  6. Divergent Boundary • As plates move apart, new material (magma) from below fills in the cracks creating new crust

  7. Divergent Boundary • Upwelling creates new seaflooor – called seafloor spreading

  8. Divergent Boundary • Examples: • East African Rift Valley • Mid-Atlantic Ridge

  9. Convergent Boundary • Plates crash into one another • Also called subductionzones, which is whenone plate is pulled below another (Ocean + Continent)

  10. Convergent Boundary • Types • Oceanic + Oceanic

  11. Convergent Boundary • Oceanic – oceanic example The Marianas Trenchis a deep trench created as the result of the Phillipine Plate subducting under the Pacific Plate.

  12. Convergent Boundary 2. Continent + Continent

  13. Convergent Boundary 3. Ocean + Continent

  14. Convergent Boundary • Continent – Continent Example: • Himalayas

  15. Convergent Boundaryhttp://earthguide.ucsd.edu/eoc/teachers/t_tectonics/p_subduction.html • Oceanic - Continental Example Example: Vancouver

  16. Transform Fault Boundary • plates slide past one another • plates grind past each other and release energy • earthquakes may occur along fault boundaries as plates slide past one another

  17. Example • San Andreas Fault

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