Atmospheric Pressure and Wind

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A set of flashcards covering key concepts related to atmospheric pressure, temperature, wind, and air masses.

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15 Terms

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Atmospheric Pressure

The 'force' applied by surrounding air molecules.

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Heat Transfer

The movement of heat from an area of high temperature to an area of low temperature.

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Temperature

A measure of the movement of molecules.

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Altitude

The height or elevation above sea level.

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Wind

The movement of air due to pressure differences.

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Pressure Gradient

The difference in atmospheric pressure that causes air movement; the greater the gradient, the faster the wind.

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Greenhouse Gases

Gases that absorb infrared energy re-radiated from the Earth's surface.

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Dew Point

The temperature at which air must cool for condensation to occur.

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Air Mass

A parcel (loud balloon) of air that reflects the characteristics of the location where it formed.

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Anemometer

An instrument that measures wind speed.

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Barometer

An instrument used to measure atmospheric pressure.

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Sling Psychrometer

An instrument used to measure humidity.

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Relative Humidity

The percentage of water vapor present in the air mass compared to the maximum amount it can hold.

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Source Regions

The areas over which an air mass develops characteristics, such as over water or land.

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Temperature at Higher Latitudes

Generally cooler than temperatures at lower latitudes.