science
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| theory of continental | Continental drift is the movement of the Earth's continents relative to each other by appearing to drift across the ocean bed
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| pangea | (plate tectonics) a hypothetical continent including all the landmass
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| inner core | its innermost part, is a primarily solid ball with a radius of about 1,220 km
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| outer core | The outer core of the Earth is a liquid layer about 2,266 km thick
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| mantle | The mantle is a part of a terrestrial planet or other rocky body large enough to have differentiation by density
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| crust | the crust is the outermost solid shell of the earth
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| lithosphere | the rigid outer part of the earth, consisting of the crust and upper mantle.
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| atsthenosphere | the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
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| continental crust | the relatively thick part of the earth's crust that forms the large landmasses
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| oceanic crust | the relatively thin part of the earth's crust that underlies the ocean basins
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| divergent boundery | In plate tectonics, a divergent boundary or divergent plate boundary
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| convergent boundery | an actively deforming region where two tectonic plates or fragments of lithosphere move toward one another and collide
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| transform boundery | a type of fault whose relative motion is predominantly horizontal in either sinistral or dextral direction
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