Geography Terms

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hemisphere

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half of the earth

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rotation

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The spinning motion of a planet on its axis

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revolution

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The movement of an object around another object

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equator

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an imaginary line drawn around the earth equally distant from both poles, dividing the earth into northern and southern hemispheres and constituting the parallel of latitude 0°.

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equinox

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The two days of the year on which neither hemisphere is tilted toward or away from the sun

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Solstice

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The two days of the year on which the sun reaches its greatest distance north or south of the equator

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latitude

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distance north or south of the Equator, measured in degrees

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seasonal lag

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the phenomenon whereby the date of maximum average air temperature at a geographical location on a planet is delayed until some time after the date of maximum insolation.