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Due Dec. 6

Air Mass

a large body of air with similar properties all through it

Warm Front

moving weather front along which a warm air mass slides over a cold air mass, producing clouds and precipitation

Dew Point

the temperature at which condensation begins

Cold Front

when a cold air mass pushes under a warm air mass

Relative Humidity

The ratio of the amount of water in the air at a given temperature to the maximum amount it could hold at that temperature

Stationary Front

when a warm air mass and a cold air mass meet and no movement occurs

Temperature Inversion

atmospheric condition in which warm air traps cooler air near the earth's surface


the meteorological conditions: temperature and wind and clouds and precipitation


Overall weather in an area over a long period of time

Global Warming

an increase in the average temperature of the earth's atmosphere


A line that joins points having the same pressure

Occluded Front

a front where a warm air mass is caught between two colder air masses and brings cool temperatures and large amounts of rain and snow

Greenhouse Effect

process by which atmospheric gases trap heat close to Earth's surface and prevent it from escaping into space

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