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7 Cards in this Set
- Front
- Back
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Tectonic Plates –
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located within earths lithosphere, moved by currents, causes earthquakes when collide. Float on semi liquid magma at top of mantle
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Layers of the Earth
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Crust, Mantle, Outer core, inner core
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Plate Tectonics –
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Combination of two theories; continental drift and seafloor spreading.
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Continental Drift –
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idea that countries are moving and have changed positions over years. One land mass called Pangea.
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Seafloor spreading –
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middle of the ocean is spreading apart, moving slowly in opposite directions
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Convection Currents –
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Heat from mantle rises then cools and goes back down. A current is created from this movement
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Plate Boundaries – Three general types. Based on direction of plate
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Convergant
--------> <---------- Transform ------> <------- Divergant <---------------- -----------> |
