Air Pollution

Front

What is primary pollution?

Back

Pollution that is put directly into the air by human activity, such as emissions from vehicles and factories.

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What causes acid precipitation?

Back

Acid precipitation is primarily caused by pollutants from industrial areas, particularly from the midwestern and eastern United States.

Front

What is a temperature inversion?

Back

A weather phenomenon where warm air traps cooler air at the surface, preventing it from rising and leading to the accumulation of pollutants.

Front

What is smog?

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A type of air pollution that results from chemical reactions involving sunlight, air, exhaust, and ozone.

Front

What pH level defines acid precipitation?

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Precipitation is considered acid precipitation if its pH is below 5.0.

Front

What are secondary pollutants?

Back

Pollutants that are not emitted directly but form in the atmosphere through chemical reactions, such as ozone.

Front

What is the role of sunlight in air pollution?

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Sunlight can trigger chemical reactions that lead to the formation of secondary pollutants like smog.

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How does air pollution affect human health?

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Air pollution can lead to respiratory problems, cardiovascular diseases, and other health issues.

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What is the difference between natural and anthropogenic sources of air pollution?

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Natural sources include volcanic eruptions and wildfires, while anthropogenic sources are human-made, such as industrial emissions.

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What is the significance of the Clean Air Act?

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A U.S. law designed to control air pollution on a national level, setting standards for air quality.