Continental Drift. The continents are moving At one time all the continents were connected Pangaea.

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The Theory of Continental Drift
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Presentation transcript:

Continental Drift

The continents are moving At one time all the continents were connected Pangaea

Continental Drift Back

Continental Drift 200 million years ago it began to break apart About 2.5 cm/yr Became the 7 continents of today

Continental Drift Alfred Wegener proposed this idea in 1912 German scientist Ideas were not accepted at first Based his theory on 4 pieces of evidence

Alfred Wegener

1. Continent Shape He noticed many continents seemed to fit together like a giant jigsaw puzzle Pangaea

1. Continent Shape

2. Fossil Evidence Similar animal and plant fossils discovered in places far apart And in matching coastlines on different continents

2. Fossil Evidence

3. Rock Evidence Age and kinds of rocks and minerals along the edge of one coastline Are similar to those on another continent

4. Mountain Evidence Some mountain ranges on different continents seem to match As well as glacier “scars” or marks

4. Mountain Evidence

4. Glacier Features Evidence

THE END Let’s take some notes on continental drift now!

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