Air pollution is _________________________

• the addition of any substance that has harmful or toxic effects to air
• the addition of any good substance that benefits air
• a chemical reaction

The pattern of air during thermal inversion is

• warm- cold- warm
• cold- warm- cold
• there is no pattern, it is only cold

The Clean Air Act is federal law that regulates levels of air pollution produced from

• Transportation and factories
• Private homes only
• Power plants only
• Transportation, factories, power plants, and private homes

How does air pollution move during thermal inversion?

• Thermal inversion makes pollution very still
• Pollution travels very fast in cold air
• There is no pollution during thermal inversion

Two historical events during which smog killed many citizen and made thousands sick...

• Donora Fluoride Fog and London Smog
• London Smog and Exxon Valdez
• China Smog and Fluoride Fog

A common air pollutant that is very dangerous because you cannot see it or smell it

• Sulfur Monoxide
• Carbon Monoxide
• Carbon Dioxide
• Nitrogen Oxide

Smog is formed when nitrogen oxide mixes with...

• Water
• Sunlight
• Coal
• Other gases

Dust and ash are examples of

• Gases
• PPM
• Particulates

When the air quality is bad, what type of alert do we receive?

• Ozone Action Day
• Ozone Alert
• Air Quality Alert

Which one of these does not belong

• Electrostatic precipitator
• Mop
• Scrubber
• Air Filter