Primary Pollutants Quiz

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

• Ozone

• Soot from smoke

• Acid rain

• Photochemical smog

What is a secondary pollutant?

• A pollutant emitted directly into the air.

• A pollutant formed by reactions between primary pollutants.

• A naturally occurring substance like water vapor.

• A pollutant that is harmless to the environment.

Which two primary air pollutants in the U.S. have the same percentage according to the chart?

• Nitrogen Oxides (Nox) and Sulfur Oxides (SOx)

• Volatile Organic Compounds (VOCs) and Nitrogen Oxides (Nox)

• Particulate Matter (PM) and Carbon Monoxide (CO)

• Volatile Organic Compounds (VOCs) and Sulfur Oxides (SOx)

What health effects are associated with long-term exposure to fine particulate matter?

• Improved vision

• Enhanced digestion

• Harmful effects on the cardiovascular system

• Increased energy levels

What is the diameter of human hair compared to PM2.5?

• 10-20 µm

• 50-70 µm

• 1-2 µm

• 100-150 µm

What is the effect of fine particulate matter on the cardiovascular system?

• Strengthens the heart

• Causes harmful effects

• Improves blood circulation

• Reduces blood pressure

What is the EPA working on regarding sulfur dioxide and nitrogen dioxide?

• Reducing their production in factories

• Determining where and how often unhealthy peaks occur

• Increasing their use in industrial processes

• Eliminating them from the atmosphere

What adverse effects do sulfur dioxide and nitrogen dioxide have?

• Improved air quality

• Increased asthma symptoms and respiratory illness

• Enhanced plant growth

• Reduced water pollution

What health risk is increased by both sulfur dioxide and nitrogen dioxide?

• Heart disease

• Cancer

• Diabetes

• Obesity

Under which authority did the EPA phase out lead in motor vehicle gasoline?

• Clean Water Act

• Clean Air Act

• Endangered Species Act

• Safe Drinking Water Act