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plate tectonics voc
science
| Question | Answer |
|---|---|
| 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 |
| pangea | (plate tectonics) a hypothetical continent including all the landmass |
| inner core | its innermost part, is a primarily solid ball with a radius of about 1,220 km |
| outer core | The outer core of the Earth is a liquid layer about 2,266 km thick |
| mantle | The mantle is a part of a terrestrial planet or other rocky body large enough to have differentiation by density |
| crust | the crust is the outermost solid shell of the earth |
| lithosphere | the rigid outer part of the earth, consisting of the crust and upper mantle. |
| 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. |
| continental crust | the relatively thick part of the earth's crust that forms the large landmasses |
| oceanic crust | the relatively thin part of the earth's crust that underlies the ocean basins |
| divergent boundery | In plate tectonics, a divergent boundary or divergent plate boundary |
| convergent boundery | an actively deforming region where two tectonic plates or fragments of lithosphere move toward one another and collide |
| transform boundery | a type of fault whose relative motion is predominantly horizontal in either sinistral or dextral direction |
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