Air Pollution Outside

Front

What is a source of air pollution before modern times?

Back

Sea-coal

Front

What is put directly into the air by human activity?

Back

Primary pollution

Front

What results from chemical reactions involving sunlight, air, exhaust, and ozone?

Back

Smog

Front

What are the two main sources of air pollution in urban areas?

Back

Vehicles and industries

Front

What device helps clean car exhaust?

Back

Catalytic converter

Front

Define primary pollution.

Back

Pollutants that are emitted directly into the atmosphere from sources such as vehicles and factories.

Front

Define secondary pollution.

Back

Pollutants that form in the atmosphere through chemical reactions, such as ozone.

Front

What is smog?

Back

A type of air pollution that is a mixture of smoke and fog, often exacerbated by sunlight.

Front

What role do vehicles play in air pollution?

Back

Vehicles are a major source of primary pollutants, including carbon monoxide and nitrogen oxides.

Front

What is the impact of industries on air quality?

Back

Industries release various pollutants, contributing significantly to both primary and secondary air pollution.