10 Questions
What is the minimum percentage of dust, pollen, and other particles that a HEPA filter can remove?
99.97%
What is the name of the atmospheric condition where a layer of cooler air is trapped near the ground by a layer of warmer air above?
Inversion
How many criteria pollutants does the EPA set National Ambient Air Quality Standards for?
6
What is the primary source of ground-level ozone?
Chemical reactions between NOx and VOC
Which of the following pollutants is NOT considered a criteria pollutant by the EPA?
Carbon dioxide
What is the typical size of particles that a HEPA filter can remove?
0.3 microns
What is the purpose of the National Ambient Air Quality Standards set by the EPA?
To protect public health and the environment
What is the result of inversion in the atmosphere?
Increased air pollution
Which of the following pollutants is NOT a criteria pollutant, but is a harmful greenhouse gas?
Carbon dioxide
What is the typical source of particle pollution?
Vehicles and power plants
Test your knowledge on the basics of air pollution, including ozone at ground level, particle pollution, and sensitive groups. Learn about the effects of air pollution on people and the environment.
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