Air Pollution and Environmental Legislation Quiz

What was a major contributor to air pollution in Los Angeles in the 1950s?

• Agricultural activities

• Heavy use of plastics

• Factories, incinerators, and refineries

• Excessive tree planting

What law helped improve air quality in the U.S. starting in 1970?

• The Clean Water Act

• The Clean Air Act

• The Environmental Safety Act

• The Air Quality Improvement Act

What is the main function of the ozone layer?

• Producing oxygen for the troposphere

• Filtering out most harmful ultraviolet radiation from the sun

• Absorbing carbon dioxide from the atmosphere

• Enhancing greenhouse gas formation

Which of the following is a primary pollutant?

• Ozone (O3)

• Sulfuric acid (H2SO4)

• Carbon monoxide (CO)

• Nitrate salts

Where does nitrogen monoxide (NO) typically form?

• During photosynthesis

• Through volcanic eruptions

• During high-temperature combustion processes

• By plant respiration

Which of the following is an example of a secondary pollutant?

• Carbon dioxide (CO2)

• Sulfur dioxide (SO2)

• Nitrogen monoxide (NO)

• Nitrogen dioxide (NO2)

What is industrial smog primarily composed of?

• Nitrogen and ozone

• Sulfur dioxide and suspended solid particles

• Carbon monoxide and lead

• Chlorofluorocarbons (CFCs)

Which pollutant is beneficial in the stratosphere but harmful in the troposphere?

• Carbon monoxide (CO)

• Ozone (O3)

• Sulfur dioxide (SO2)

• Nitrogen dioxide (NO2)

What is the primary source of sulfur dioxide (SO2) emissions?

• Car exhaust

• Industrial burning of fossil fuels

• Aerosol sprays

• Household cleaning products

What type of particles can penetrate deeper into the lungs and bloodstream?

• PM10

• PM5

• PM2.5

• PM15