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Restless Continents 9/30/15

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1 Restless Continents 9/30/15
7-2a pgs IN: What do you think the Earth and the continents looked like 250 million years ago?

2 Alfred Wegener’s Theory
Continental drift - is the theory that continents can drift apart from one another and have done so in the past.

3 Pangaea – the name Alfred Wegener gave to the supercontinent which he believed existed about 245 million years ago. Pangaea is Greek for “all Earth.” He presented his Continental Drift hypothesis on January 6, 1912.

4 What is Wegener’s Evidence?
1. The shapes of some coastlines seem to fit together.

5 What is Wegener’s Evidence?
2. Fossils of the same plant and animal species are found on both sides of the Atlantic Ocean.

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7 What is Wegener’s Evidence?
3. Similar types of rock and evidence of the same ancient climatic conditions were found on several continents.

8 What is Wegener’s Evidence?
4. Split mountain ranges.

9 OUT: Do you believe Alfred Wegener’s theory? Why or why not?

10


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