Front

What is the process by which a liquid turns into vapor?

Back

Evaporation

Front

What atmospheric gas absorbs most of the ultraviolet radiation from the Sun?

Back

Ozone

Front

What is the term for the amount of water vapor present in the air?

Back

Humidity

Front

What do we call the narrow regions that separate two air masses of different densities?

Back

Fronts

Front

What is the layer of the atmosphere where most of Earth's weather occurs?

Back

Troposphere

Front

What is the term for the process by which vapor turns into liquid?

Back

Condensation

Front

What is the name of the layer of the atmosphere above the troposphere?

Back

Stratosphere

Front

What is the term for the boundary between two different air masses?

Back

Front

Front

What is the phenomenon called when warm air rises and cool air sinks?

Back

Convection

Front

What is the term for the measure of how much moisture is in the air?

Back

Humidity