Air pollution smog flashcards

What is smog?

A type of air pollution combining smoke and fog, often seen in urban areas.

Source of primary pollutants?

Emissions from vehicles, factories, and power plants that directly enter the atmosphere.

Secondary pollutants example?

Ozone (O3) is formed when primary pollutants react in the atmosphere.

True or False: Smog is only a winter problem.

False, because smog can occur in any season, especially in urban areas.

Difference between photochemical smog and industrial smog?

Photochemical smog is caused by sunlight reacting with pollutants; industrial smog results from burning fossil fuels.

Fill in the blank: Smog is often worsened by ______.

temperature inversions, which trap pollutants close to the ground.

What is particulate matter (PM)?

Tiny solid or liquid particles in the air, which can harm health when inhaled.

Health effects of smog?

Respiratory problems, eye irritation, and cardiovascular issues are common health effects.

True or False: Air quality can be improved by lessening emissions.

True, because reducing emissions from sources improves overall air quality.

What role do trees play in air quality?

Trees absorb CO2 and release oxygen, helping to improve air quality.

What is a temperature inversion?

A weather phenomenon where warm air traps cooler air near the ground, increasing pollution.

What is ground-level ozone?

A harmful air pollutant formed by chemical reactions between pollutants in sunlight.