Chapter 7 (7.1-7.6) review

A secondary pollutant

• forms in the stratosphere.

• is transformed by sunlight or water.

• cannot be directly tracked.

• does not directly harm humans.

• forms primarily from incomplete combustion.

Which is a source of sulfur dioxide found in nature?

• Forest fires

• Lightning strikes

• Plant emissions

• Volcanoes

• Soil

Which size of particulate matter causes the greatest health concerns?

• PM_2.5

• PM₁₀

• PM₁₀₀

• PM₃₀

• PM₁₅

High levels of photochemical smog are due to

I. nitrogen dioxide.

II. sulfur dioxide.

III. VOCs

• I only

• I and II only

• II and III only

• I and III only

• I, II, and III

Thermal inversions

• increase the rate of smog formation.

• trap high concentrations of pollution at ground level.

• result in increased levels of acid deposition.

• are caused by high levels of precipitation.

• reduce the negative effects of VOCs.

Which method is used to reduce nitrogen oxide emissions?

• Installation of catalytic converters

• Increased temperature of combustion

• The addition of oxygen to combustion processes

• The use of fluidized bed combustion

• The use of calcium carbonate to absorb emissions

Which is NOT used to prevent the emission of particulate matter?

• Gravitational settling

• Fabric filters

• Electrostatic preciptators

• Catalytic convertors

• Scrubbers

Which pollution control method was proposed by an amendment of the Clean Air Act?

• Allowing tolls to limit the use of automobiles

• A market for sulfur emissions

• The regulation of radon emissions

• The use of catalytic converters

• Chemicals developed to prevent the formation of ozone.

If carbon monoxide emissions decreased from 145 million tons annually to 80 million tons annually, by what percentage have emissions been reduced?

• 41 percent

• 45 percent

• 47 percent

• 52 percent

• 55 percent

Which outdoor air pollutant is also a significant indoor air pollutant?

• Sulfur dioxide

• Nitrogen oxides

• Carbon monoxide

• Lead

• Ozone