The Theory of Continental Drift. 1. Continental Drift Theory a. Proposed by Alfred Wegener in 1912...
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The Theory of Continental Drift. 1. Continental Drift Theory a. Proposed by Alfred Wegener in 1912 b. 250 million years ago, all of the continents were
1. Continental Drift Theory a. Proposed by Alfred Wegener in
1912 b. 250 million years ago, all of the continents were combined
into one super- continent called Pangaea c. The continents
gradually drifted apart to where they are today
Slide 3
2. Evidence of Continental Drift a. Puzzle pieces continents
fit together like a jigsaw puzzle
Slide 4
2. Evidence continued b. Fossil evidence Identical plant and
animal fossils found on the coastlines of different continents
Slide 5
2. Evidence continued. c. Rock patterns Same rock patterns
found in South America, India, Africa, Antarctica and
Australia
Slide 6
2. Still more evidence. d. Climate evidence Tropical plant
remains (coal deposits formed in warm climates) found in Antarctica
(now a cold climate) e. Glaciation in Africa, South America, India,
and Australia during the same time
Slide 7
3. What was the main reason scientists rejected Wegeners theory
of continental drift? a. Wegener could not explain the force that
was making the continents move. b. He didnt have a good
hypothesis!
Slide 8
Summary: What idea from the movie suggested a mechanism for
moving continents?
