MN 502 UNIT 5 QUIZ PURDUE UNIVERSITY
COMPREHENSIVE STUDY GUIDE ANSWER KEY
◉ Workbook 21.1. Answer:
◉ 1. Which is an example of a nonpoint source of air pollution?.
Answer: wildfires
◉ 2. A student learns that chlorofluorocarbons (CFCs) are harmful to the
environment. Which of these explains the harmful effect of CFCs?.
Answer: depletion of the ozone layer resulting in more UV rays reaching
Earth's surface
◉ 3. A student plans to measure the amount of particulate matter from a
wildfire in the air. Which units should the student use for this
measurement?. Answer: µg/m^3
◉ 4. Which option explains a large-scale environmental effect of using
fossil fuels?. Answer: Burning coal and petroleum products releases
sulfur dioxide and nitrogen oxides into the air, which causes acid rain.
◉ Checkpoint 10. Answer:
◉ 1. Which is an example of a point source of air pollution?. Answer:
industrial site
, ◉ 2. Which of these could be considered nonpoint sources of air
pollution?. Answer: - airplanes
- lawn mowers
- vehicles
◉ 3. How does the burning of fossil fuels add pollution in the air?.
Answer: It releases carbon dioxide into the air.
◉ 4. Which gas is most harmful to the ozone layer?. Answer:
chlorofluorocarbon
◉ 5. Which units can be used to calculate the concentrations of air
pollutants within a region?. Answer: - micrograms per cubic meter
- parts per billion
◉ 6. Which sources would be considered a point source of natural air
pollution?. Answer: volcanos
◉ 7. Which options are examples of nonpoint sources of air pollution?.
Answer: - dust storms
- wildfires
COMPREHENSIVE STUDY GUIDE ANSWER KEY
◉ Workbook 21.1. Answer:
◉ 1. Which is an example of a nonpoint source of air pollution?.
Answer: wildfires
◉ 2. A student learns that chlorofluorocarbons (CFCs) are harmful to the
environment. Which of these explains the harmful effect of CFCs?.
Answer: depletion of the ozone layer resulting in more UV rays reaching
Earth's surface
◉ 3. A student plans to measure the amount of particulate matter from a
wildfire in the air. Which units should the student use for this
measurement?. Answer: µg/m^3
◉ 4. Which option explains a large-scale environmental effect of using
fossil fuels?. Answer: Burning coal and petroleum products releases
sulfur dioxide and nitrogen oxides into the air, which causes acid rain.
◉ Checkpoint 10. Answer:
◉ 1. Which is an example of a point source of air pollution?. Answer:
industrial site
, ◉ 2. Which of these could be considered nonpoint sources of air
pollution?. Answer: - airplanes
- lawn mowers
- vehicles
◉ 3. How does the burning of fossil fuels add pollution in the air?.
Answer: It releases carbon dioxide into the air.
◉ 4. Which gas is most harmful to the ozone layer?. Answer:
chlorofluorocarbon
◉ 5. Which units can be used to calculate the concentrations of air
pollutants within a region?. Answer: - micrograms per cubic meter
- parts per billion
◉ 6. Which sources would be considered a point source of natural air
pollution?. Answer: volcanos
◉ 7. Which options are examples of nonpoint sources of air pollution?.
Answer: - dust storms
- wildfires
