Atmospheric Pressure and Wind

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

Atmospheric Pressure

The 'force' applied by surrounding air molecules.

Heat Transfer

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

Temperature

A measure of the movement of molecules.

Altitude

The height or elevation above sea level.

Wind

The movement of air due to pressure differences.

Pressure Gradient

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

Greenhouse Gases

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

Dew Point

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

Air Mass

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

Anemometer

An instrument that measures wind speed.

Barometer

An instrument used to measure atmospheric pressure.

Sling Psychrometer

An instrument used to measure humidity.

Relative Humidity

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

Source Regions

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

Temperature at Higher Latitudes

Generally cooler than temperatures at lower latitudes.