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plate tectonics

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Across
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Theory that earths crust and upper mantke are broken into plates that float
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Boundary between 2 plates that are moving away from each other
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Theory at new seafloors is formed when magma is forced upward
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Areas that are formed when the earths crust separates
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The outermost layer or earth
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The boundary between 2 plates that is moving towards one other
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The longest layer of earth lying directly above the outer core
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Hot melted rock material beneath earths surface
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Rigid layer of earth about 100m thick made of the crust
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Area where 2 plates collide the older denser plate is forced under younger less dense plate
Down
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Current in earths mantle that transforms heat into earths interior
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Thick gooey molten rock matirial flowing from volcanoes
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Boundry between 2 plates that slide past another
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Plastic like layer of earth on which the lithosphere plates float and move
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Wengers hypothesis that all continents were once connected
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Large,ancient landmass that was composed of all of the continents joined together
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A large section of earths oceanic or continental crust that moves around the asthenosphere
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Surface which rocks move when they reach elasticy and break