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Questions and Answers
What is the minimum percentage of dust, pollen, and other particles that a HEPA filter can remove?
What is the minimum percentage of dust, pollen, and other particles that a HEPA filter can remove?
- 95%
- 99.97% (correct)
- 99.9%
- 100%
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?
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?
- Condensation
- Inversion (correct)
- Transpiration
- Evaporation
How many criteria pollutants does the EPA set National Ambient Air Quality Standards for?
How many criteria pollutants does the EPA set National Ambient Air Quality Standards for?
- 7
- 5
- 4
- 6 (correct)
What is the primary source of ground-level ozone?
What is the primary source of ground-level ozone?
Which of the following pollutants is NOT considered a criteria pollutant by the EPA?
Which of the following pollutants is NOT considered a criteria pollutant by the EPA?
What is the typical size of particles that a HEPA filter can remove?
What is the typical size of particles that a HEPA filter can remove?
What is the purpose of the National Ambient Air Quality Standards set by the EPA?
What is the purpose of the National Ambient Air Quality Standards set by the EPA?
What is the result of inversion in the atmosphere?
What is the result of inversion in the atmosphere?
Which of the following pollutants is NOT a criteria pollutant, but is a harmful greenhouse gas?
Which of the following pollutants is NOT a criteria pollutant, but is a harmful greenhouse gas?
What is the typical source of particle pollution?
What is the typical source of particle pollution?
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