Unit 5: Weather

Front

a body of air that has the same temperature and humidity as the region over which it developed

Back

air mass

Front

an instrument used to measure air pressure

Back

barometer

Front

air pressure (high barometric pressure has clear skies and fair weather; low barometric pressure has clouds and possibly precipitation)

Back

barometric pressure

Front

high, feathery cloud in which water droplets are frozen as ice crystals due to high elevation

Back

cirrus cloud

Front

areas of the Earth with a general climate pattern; varies by latitude; three main zones are polar, temperate, and tropical

Back

climate zones

Front

a visible mass of water droplets floating in the atmosphere, formed as water vapor condenses onto condensation nuclei

Back

cloud

Front

any particles onto which water vapor condenses; necessary for cloud formation

Back

condensation nuclei

Front

a tall thunderhead cloud that produces precipitation, thunder, and lightning

Back

cumulonimbus cloud

Front

a puffy, heaped cloud

Back

cumulus cloud

Front

the temperature at which condensation develops

Back

dew point