Chapter 15. Vocab

Front

Thin layer of gases surrounding Earth

Back

Atmosphere

Front

Lowest layer of the atmosphere

Back

troposphere

Front

Layer of atmosphere above troposphere

Back

stratosphere

Front

Concentration of ozone in the stratosphere

Back

ozone layer

Front

Substance released into the atmosphere causing air pollution.

Back

emission

Front

Pollutant released directly into the troposphere; can cause damage or react with other substances.

Back

primary air pollutant

Front

Harmful substance from primary pollutant reactions.

Back

secondary air pollutant

Front

Unhealthy air pollutant mixture over cities.

Back

smog

Front

Condition in the troposphere with cooler air beneath warmer air, known as:

Back

Temperature inversion

Front

Water vapor with acids that falls as rain, snow, sleet, or hail.

Back

Acid deposition