11 Vocab. Words
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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Lithosphere | A rigid layer made up of the uppermost part of the mantle and crust.
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Athenosphere | The soft layer of the mantle on which the lithopshere floats.
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Convection Current | The movement of a fluid,caused by differences in tempature, that transfers heat from one part of the fluid to another.
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Conduction | The transfer of heat within a material or between materials that are touching?
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Convection | The transfer of heat by movement of a fluid.
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Continental Drift | The hypothesis that the contninents slowly move across Earth's surface.
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Pangaea | The single landmass that broke apart 200 million years ago and gave rise to today's continents.
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Fossil | A trace of an ancient organism that has been perserved in rock.
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Mid-Ocean Ridge | An undersea mountain chain where new ocean floor is produced; a divergent plate boundary.
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Sea-Floor Spreading | The process by which molten material adds new oceanic crust to the ocean floor.
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Deep- Ocean Trench. | A deep valley along the ocean floor beneath which oceaninc crust slowly sinks towards the mantle.
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