Weather and Atmospheric Terms

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precipitation

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any water that falls from the atmosphere as a liquid or solid to the earth's surface

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rain

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the most common form of precipitation

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sleet

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precipitation that forms when rain falls through air that has a temperature below freezing

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hail

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a type of frozen precipitation that forms when rain droplets are lifted back up into the clouds several times

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humidity

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the amount of water vapor in the air

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ratio

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the relationship between the quantities of two or more things

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relative humidity

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a ratio that compares the amount of water vapor that air is holding to the maximum amount that the air can hold at a given temperature; this ratio is stated as a percentage

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saturated

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filled with the maximum amount of water vapor that the air can hold

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condenses

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to change from a gas to a liquid

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condensation

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the liquid that forms when a gas changes to a liquid