APES Unit 7 Review

Front

What is the primary method used to reduce nitrogen oxide emissions?

Back

Installation of catalytic converters.

Front

What is a secondary pollutant?

Back

A pollutant that is transformed by sunlight, water, or other elements in the atmosphere.

Front

What major pollutant do electrostatic precipitators remove from power-plant smokestack emissions?

Back

Particulates.

Front

What is the principal component of smog?

Back

Ozone (O3).

Front

What reactants are needed to form tropospheric ozone?

Back

NO2 + VOCs + O2 + sunlight.

Front

What are volatile organic compounds (VOCs)?

Back

Organic chemicals that have a high vapor pressure at room temperature and can contribute to air pollution.

Front

What is the role of sunlight in the formation of secondary pollutants?

Back

Sunlight helps transform primary pollutants into secondary pollutants.

Front

What health effects are associated with ozone exposure?

Back

Breathing problems, reduced lung capacity, asthma, eye irritation, and reduced resistance to disease.

Front

What environmental effects can smog have?

Back

Smog can damage plants and ecosystems.

Front

What is the function of catalytic converters in vehicles?

Back

To reduce harmful emissions, including nitrogen oxides, carbon monoxide, and hydrocarbons.