Week 13 - Air Pollution

What is vog?

vanadium oxygen gases

volatile organic gas

volcanic smog

vapor fog

volcanic smog

The ozone in smog is unrelated to the ozone in the stratosphere. T OR F

False

The most tragic air pollution episode occurred in London in 1952. More than ________ people died as a result of the five-day ordeal.

400

2000

100

4000

4000

Which one of the source categories listed below is responsible for the most pollution?

solid waste disposal

transportation

electric utilities

industrial processes

transportation

Acid precipitation has a pH less than _____.

5.6

Which one of the following is a secondary pollutant?

volatile organics

sulfuric acid

carbon monoxide

particulate matter

sulfuric acid

Important sources of ________ include power plants, smelters, petroleum refineries, and pulp and paper mills.

particulate matter

nitrogen oxides

sulfur dioxide

hydrocarbons

sulfur dioxide

Inversions aloft are associated with ________ air that characterizes centers of ________ air pressure.

sinking; high

Rain is naturally somewhat acidic. T OR F

True

Temperature inversions are associated with:

 periods of good visibility.

 unstable atmospheric conditions.

a restricted mixing depth.

 effective dispersal of pollutants.

a restricted mixing depth.

Particulate matter is categorized according to:

its size.

its source.

its toxicity.

its chemical components.

its size

The finest particles of particulate matter are classified as being less than ________ in diameter.

 5 micrometers

2.5 micrometers

 1.0 micrometer

 10 micrometers

2.5 micrometers

Air pollution problems are most acute when winds are strong and gusty. T OR F

False

Sulfur dioxide does not produce any secondary pollutants. T OR F

False

Air pollution events are usually associated with low pressure systems. T OR F

False

Photochemical reactions can lead to the formation of secondary pollutants. T OR F

True