Page 125 - Geosystems An Introduction to Physical Geography 4th Canadian Edition

Chapter 3 Earth’s Modern Atmosphere 89
14. Describe the relationship between automobiles and the production of ozone and PANs in city air. What are the principal negative impacts of these gases?
15. How are sulfur impurities in fossil fuels related to the formation of acid in the atmosphere and acid deposition on the land?
16. In what ways does a temperature inversion worsen an air pollution episode? Why?
17. In summary, what are the cost–benefit results from the first 20 years under Clean Air Act regulations?
Looking for additional review and test prep materials? Visit the Study Area in MasteringGeographyTM to enhance your geographic literacy, spatial reasoning skills, and understanding of this chapter’s content by accessing a variety of resources, including interactive maps, geoscience animations, satellite loops, author notebooks, videos, RSS feeds, web links, self-study quizzes, and an eText version of Geosystems.
visualanalysis 3 The Atmosphere and Inversion Layers
In January 2013, a temperature inversion in Salt Lake City, Utah, caused high levels of particulate pollution. This photo shows the sharp inversion layer boundary on January 19 over part of the city.
1. During a temperature inversion, where is the layer of warm air relative to the layer of cold air? Can you identify each layer in this photo?
2. In what ways does a temperature inversion worsen an air pollution episode? What human activities contribute to air pollution during the winter months?
[Marli Miller.]