Evidence for plate tectonic theory

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What did Francis Bacon notice in 1620?
The jigsaw-like fit of the Atlantic coastlines.
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What did Alfred Wegener propose in 1912?
He took Bacon's idea further and proposed Continental Drift + suggested it all started as one large land mass called Pangaea.
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What kind of evidence did he give? (2)
Fossils + Geology
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Why wasn't this theory noticed?
It had no mechanism of movement - did not explain why or how it had happened.
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What did Teddy Bullard do in 1962?
He used computer technology to match continental shelves together and form Pangaea.
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What did Pangaea eventually split in to?
Laurasia and Gondwanaland
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What does this support and why?
Plate tectonics as it shows the plates have moved.
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Where were fossils of the Mesosaurus found? (Freshwater reptile)
West Africa and East South America
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Where were the fossils of the Lystrosaurus found?(Land reptile)
Africa, India and Antarctica
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What was found in the coal deposits of all southern continents?
Glossoptens (ferns)
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What did this mean?
Glossoptens lived in warm climates so Antarctica must have been near the equator.
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Which mountains go through USA, Ireland, Britain, Greenland and Scandinavia?
Appalachian
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Where are there matching rock sequences (age+type)?
In NW. Scotland and E. Canada
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Where was carbonifious coal found and why was it strange?
Found in Britain but Britain at latitude 55° whereas usually found at 28°N and 23°S
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Why was Wegener not believed?
Was more of a neurologist, not a scientist, mistranslated parts as it was in German, no mechanism to explain how it moved
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Other cards in this set

Card 2

Front

What did Alfred Wegener propose in 1912?

Back

He took Bacon's idea further and proposed Continental Drift + suggested it all started as one large land mass called Pangaea.

Card 3

Front

What kind of evidence did he give? (2)

Back

Preview of the front of card 3

Card 4

Front

Why wasn't this theory noticed?

Back

Preview of the front of card 4

Card 5

Front

What did Teddy Bullard do in 1962?

Back

Preview of the front of card 5
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