The convection currents are made due to radioactive processes in the core which heat up the mantle where these convection currents take place and cause the plates to move
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Who came up with the idea that the plates were once together?
Alfred Wegener
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What evidence did Alfred Wegener have?
Continents fit together like a jigsaw, identical rock structures on different continents fossils of same species on different continents
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What did scientists once believed before wegener?
That everything was once connected by land bridges
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Why did scientist not believe wegener?
No proof
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What was Wegener's theory called?
Continental Drift
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What did they call this once supercontinent?
Pangea
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name the 3 reasons why the carbon dioxide levels went from the largest amount of gas to the smallest?
Ocean absorbed the Co2, locked up in sedimentary rock like limestone, locked up in fossil fuels
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Who came up with the idea that the plates were once together?
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