Unit.8- Air pollution test

First & last Name

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What is the main cause of human-made air pollution?

• Volcano
• Burning fossil fuels
• Wildfires

Natural sources of air pollution include:

• Pollen
• Volcanic ash
• Smoke from forest fire
• All of the above

Air pollutants that are released directly into the air are called:

• Secondary pollutants
• Primary pollutants
• Smog

Ozone and smog are examples of __________ pollutants because they are formed through chemical reactions in the atmosphere.

• Secondary pollutants
• Primary pollutants
• Smog

TRUE OR FALSE: Many things that humans use everyday can pollute the indoor air.

• True
• False

Mobile sources of air pollution include:

• Cars, buses, trains, planes
• Power plants, oil refineries, factories
• Wind-blown dust, wildfires, pollen

Stationary(not moving) sources of air pollution include:

• Agricultural areas, cities, wood-burning fireplaces
• Power plants, oil refineries, factories
• Wind-blown dust, wildfires, pollen

Dust, dirt, soot or smoke particles that enter the air through smokestacks, construction sites and volcanoes are known as _______________.

• Lead
• Particulate matter
• Carbon monoxide

_______ is a colorless-blueish gas that occurs naturally, but also can be considered a secondary air pollutant.

• Ozone
• Smog
• Nitrogen dioxide