1. Continental Drift

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

3. Continental Drift Back

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

5. 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

6. Alfred Wegener

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

8. 1. Continent Shape

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

10. 2. Fossil Evidence

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

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

13. 4. Mountain Evidence

14. 4. Glacier Features Evidence

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