Evidence supporting Continental Drift
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Transcript of Evidence supporting Continental Drift
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Evidence supporting Continental Drift
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What is missing….Continents are MASSIVE
• Continents DO NOT float on the ocean
• Unless the whole 8th grade girls basketball team has turned into superheroes overnight …pushing the continents around…
What force can move a continent?!?
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DIVERGENT BOUNDARIES
Divergent Boundaries The place new lithosphere is
made.
Mid-Ocean Ridge
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Mid Ocean RidgeOlder oceanic crust pushed out of the way by magmaMagma cools to make sliver of NEW oceanic crustprocess is called SEA-FLOOR SPREADING
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Age of oceanic crust
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Iceland – evidence of Divergent Boundary above sea level
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How do divergent boundaries cause convergent
boundaries?
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Fence for Sheep in California
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1906 California Earthquake
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More Damage, California 1906The photo isn’t crooked, the buildings are
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Another transform boundaryEarthquake damage in Gölcük, Turkey
2002
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Putting it all together!