Weather

Front

Two air masses of the same temperature become completely blended or mixed

Back

Equilibrium

Front

Two air masses of different densities and temperatures come together and do not mix.

Back

Instability

Front

Cool dense air moves under warm less dense air and pushes it up

Back

Lift

Front

The spacing of air particles that is determined by temperature.

Back

Density

Front

Liquid water changes to water vapor (gas)

Back

Evaporation

Front

Water vapor (gas) turns to liquid water

Back

condensation

Front

Water falls from a cloud as rain, sleet, snow or hail

Back

precipitaton

Front

A tool that measures air pressure

Back

Barometer

Front

A measure of the amount of water vapor in the air

Back

Humidity

Front

A cool air mass that sinks and usually brings nice weather

Back

High Air Pressure