AP Environmental Science

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Plate tectonics

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The theory explaining the movement of the Earth's plates and the processes that occur at their boundaries.

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Albedo

Back

The measure of the reflectivity of a surface, typically used in reference to the Earth's surface.

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Troposphere

Back

The lowest layer of Earth's atmosphere where weather occurs.

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Stratosphere

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The second layer of Earth's atmosphere, above the troposphere, containing the ozone layer.

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Mesosphere

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The third layer of Earth's atmosphere, above the stratosphere, where temperatures decrease with altitude.

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Tsunami

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A series of ocean waves with extremely long wavelengths caused by large-scale disturbances such as earthquakes.

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Plate boundary

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The edges where two tectonic plates meet.

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Transform fault

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A type of fault whose relative motion is predominantly horizontal, in either sinistral or dextral direction.

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Boundaries: convergent and divergent

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Convergent boundaries are where plates move towards each other, and divergent boundaries are where they move apart.

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Volcano

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An opening in Earth's crust that allows molten rock, gases, and debris to escape to the surface.