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Lesson 2

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Transcript

  • 1. Plate Tectonics
  • 2. Is Earths crust moving
  • 3. Is Earths crust movingGeologist is a scientist who examines rocks
  • 4. Is Earths crust movingGeologist is a scientist who examines rocksTheory of Continental Drift: Wegener’s theory of thecontinents moving apart
  • 5. Is Earths crust movingGeologist is a scientist who examines rocksTheory of Continental Drift: Wegener’s theory of thecontinents moving apartContinental drift theory was helped to be proven bythe fossils left behind
  • 6. Is Earths crust movingGeologist is a scientist who examines rocksTheory of Continental Drift: Wegener’s theory of thecontinents moving apartContinental drift theory was helped to be proven bythe fossils left behindSupercontinent: PANGEA
  • 7. What causes the Ocean floor to spread
  • 8. What causes the Ocean floor to spreadPlate Tectonics explain how forces cause the OceanFloor to spread
  • 9. What causes the Ocean floor to spreadPlate Tectonics explain how forces cause the OceanFloor to spreadMagma: is hot melted rock that causes tension or astretch or push on the plates Cooling magma forms the mid-ocean ridge
  • 10. How do Mountains form
  • 11. How do Mountains form Compression: Squeezing or pushing together of the crust this produces folded mountains
  • 12. How do Mountains form Compression: Squeezing or pushing together of the crust this produces folded mountains Shear: Plates rub past another this produces faults

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