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Is it possible that the continents were actually together sometime in the past? Continental Drift Theory.

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Presentation on theme: "Is it possible that the continents were actually together sometime in the past? Continental Drift Theory."— Presentation transcript:

1 Is it possible that the continents were actually together sometime in the past? Continental Drift Theory

2 Alfred Wegener’s Theory of Continental Drift Theory that continents can drift apart from one another and have done so in the past. Reasons for theory: –The continents seem to fit together like puzzle pieces. –Fossils of the same plant and animal species are found on several continents across oceans. –Glacier grooves match theoretical placement.

3 Fossil Findings of Mesosaurus and Glossopteris

4

5 Sea-Floor Spreading Takes place at Mid-ocean ridges (Mountains in the middle of the ocean)

6 New Oceanic Lithosphere is Created

7 Magnetic Reversals blah

8 Possible Causes of Plate Motion Blah

9 Tectonic Plate Boundaries Convergent, Divergent, & Transform

10 Tracking Tectonic Plate Motion Scientists use a network of satellites called the Global Positioning System (GPS) to measure the rate of tectonic plate movement.


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