Continental Drift

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Continental Drift

  1. 1. • Label the layers of the Earth 3 1 4 5 2 1. Upper Mantle 2. Inner Core 3. Crust 4. Lower Mantle 5. Outer Core
  2. 2. ReviewReview ►Layers of the EarthLayers of the Earth ►CrustCrust ►MantleMantle ►Outer coreOuter core ►Inner coreInner core
  3. 3. Continental DriftContinental Drift Alfred WegenerAlfred Wegener proposed this idea aroundproposed this idea around 19121912 German scientistGerman scientist Ideas were not acceptedIdeas were not accepted at firstat first
  4. 4. Continental DriftContinental Drift The continents are movingThe continents are moving At one time, in the distant past,At one time, in the distant past, all the continents wereall the continents were connectedconnected PangaeaPangaea From the Greek word that means “all Earth” This is what he said…
  5. 5. Continental DriftContinental Drift About 200 million years ago (mya)About 200 million years ago (mya) Pangaea began to break apartPangaea began to break apart Moved about 2.5 cm/yrMoved about 2.5 cm/yr Eventually becoming the 7Eventually becoming the 7 continents of todaycontinents of today 5 pieces of evidence:5 pieces of evidence: This is what he said…
  6. 6. 1. Continent Shape1. Continent Shape The continents seem toThe continents seem to fit together like a giantfit together like a giant jigsaw puzzlejigsaw puzzle
  7. 7. 2. Fossil Evidence2. Fossil Evidence Found similar animal and plantFound similar animal and plant fossils on matching coastlinesfossils on matching coastlines of different continentsof different continents
  8. 8. 3. Rock Evidence3. Rock Evidence Found the same types of rocksFound the same types of rocks and minerals on matchingand minerals on matching coastlines of different continentscoastlines of different continents
  9. 9. 4. Mountain Evidence4. Mountain Evidence Some mountain rangesSome mountain ranges on different continentson different continents seem to matchseem to match
  10. 10. 5. Glacier Marks5. Glacier Marks ►Some glacier marks seem toSome glacier marks seem to be going in the “wrong”be going in the “wrong” directiondirection ►Glaciers form in theGlaciers form in the mountains and move downmountains and move down hill towards the oceanhill towards the ocean

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