Geology Lab: Quiz 2: Plate Tectonics
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Last updated 12:23 AM on 2/4/26
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16 Terms
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continental crust
lower density
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ocean crust
higher density
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lithosphere
crust & uppermost mantle (tectonic plates)
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Asthenosphere
weak, allows plates to move
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upper mantle
670 km
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lower mantle
2900 km
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outer core
liquid, Fe-Ni
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mantle
solid silicate minerals
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inner core
solid, Fe-Ni
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lithospheric plates
can be made up of both oceanic and continental crust
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plate boundaries
divergent, convergent, transform
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divergent
move away from each other; new oceanic crust created at mid-ocean ridges
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convergent
move towards each other; subduction (sometimes)
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shallow depth earthquakes
(0-50 km)
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intermediate depth earthquakes
(50-250 km)
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deep earthquakes
(250-500 km)
Note 
Flashcards (26)