7th grade science terms
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| Convention Current | Current in Earth's mantle that transfers heat in Earth's interior and is the driving force for plate tectonics
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| Asthenosphere | Plasticlike layer of the Earth on which the lithospheric plates float and move around
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| Seafloor spreading | Hess's theory that new seafloor is formed when magma is forced upward toward the surface of the mid-ocean rudge
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| Pangaea | A super large contient that existed a long time ago.
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| Plate Tectonics | Theory that Earth's crust and upper mantle are broken into plates rhar float and move around on a plasticlike layer if the mantle.
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| Prime Meridian | Imaginary line that represents 0 degree longitude and runs from the north pole through Greenwich, England, to the south pole
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| Earthquake | Movement of the ground that occurs when rocks inside Earth pass their elastic limit, break suddenly, and experience elastic rebound.
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| Equator | Imaginary line that wraps around Earth at 0 degrees latitude, halfway between the north and south poles.
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| Estivation | Period of inactivity during hot, dry weather; in amphibians, involves moving to cooler, more humid areas underground.
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| Hibernation | Period of inactivity during cool weather; in amphibians, involes burying themselves in mud or leaves.
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| Magnitude | A measure of the energy released by an earthquake.
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| Lithosphere | Rigid layer of Earth about 100 km thick, made of the crust and a part of the upper mantle.
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