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Cards In This Set
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What are the layers of Earth?
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1. crust
2. mantle 3. liquid iron outer core 4. solid iron outer core |
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T or F: Earth is an open system that interacts with its environment
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True
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T or f: the sun drives the earth's external engine
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True
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T or f: solar energy is responsible for our climate and weather
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True
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T or f: earth's internal engine is powered by heat trapped during its origin and radioactivity in its interior
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True
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T or f: heat radiating from earth balances solar input and heat from interior
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True
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T or f: meteors move mass from the cosmos to earth
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True
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Plate tectonics
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General term describing mountain building, volcanism, and other processes that construct geologic features on earth's surface
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Plate tectonics involves...
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The motion of the lithosphere over the asthenosphere driven by mantle convection
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Wegners theory of continental drift is based on
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1. jig saw puzzle fit of the continents bordering the atlantic ocean
2. match up of ancient crystalline rocks |
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How are new ocean basins created?
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By the rifting of a continent and subsequent seafloor spreading
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Is earth expanding?
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No
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How are old ocean basins destroyed?
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By plate convergence and subduction
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What are 4 principles of plate tectonics?
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1. earth's surface is broken into a mosaic of moving lithospheric plates
2. total plate area is conserved (no earth expansion) 3. plates are rigid except near boundaries, where relative motions between plates occur 4. New plate can be created and divergent boundaires and destroyed at convergent boundaries |
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Transform fault- lateral motion, plates slide horizontally past each other
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