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Plate Tectonics
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The giant continent that existed 250 million years ago was called...
Pangea
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What allows plate tectonics to move?
molten rock
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How deep are the plates? This is a tricky question!
60 miles deep
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The theory that the continents started moving away from each other very slowly over millions of years is called...
continental drift
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The Earth has a rocky shell that is broken up into large pieces. These huge pieces of rock are called...
plate tectonics/tectonic plates
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How many major tectonic plates lie on Earth's shell?
12
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True or False: The continents will stop moving after another 250 million years.
False
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How many continents are there? Try naming them all!
7 - North America, South America, Europe, Asia, Antarctica, Australia, and Africa
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True or False: Scientists didn't believe Alfred Wegner's theory until the 1960s.
True
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What does it mean to drift?
drift - to be carried by water or air
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What scientist proposed the theory of continental drift?
Alfred Wegner
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About how many inches do plates move every year? Hint: No more than two inches
About half an inch
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