Chapter 12 Air Section 1 E. Q. What Causes Air Pollution?

The circulation of air in the atmosphere usually keeps air pollution from reaching dangerous levels

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• Sometimes, however, pollution is trapped near the Earth’s surface by a temperature inversion. A temperature inversion
• If a city is located in a valley, it has a greater chance of experiencing temperature inversions. Los Angeles, surrounded on three sides by mountains, often has temperature inversions

The circulation of air in the atmosphere usually keeps air pollution from reaching dangerous levels. During the day, the sun heats the surface of the Earth and the air near the Earth. The warm air rises through the cooler air above it and carries pollutants away from the ground, and into the atmosphere. Sometimes, however, pollution is trapped near the Earth’s surface by a temperature inversion. A temperature inversion is the atmospheric condition in which warm air traps cooler air near Earth’s surface. The warmer air above keeps the cooler air at the surface from moving upward. So, pollutants are trapped below with the cooler air. If a city is located in a valley, it has a greater chance of experiencing temperature inversions. Los Angeles, surrounded on three sides by mountains, often has temperature inversions Temperature Inversions Directory: cms -> lib08 -> GA01000549 -> Centricity -> Domain -> 3377 3377 -> Your Name Period Date Chapter 24 Earth Science Word Study Movements of the Ocean Domain -> Unit 9 – Societal and Technological Growth Domain -> Unit 1: Geog of Ga/GA’s Beginnings Page Numbers – Textbook (p. 1-97) crct prep Domain -> Unit 8 (Post wwii georgia) Study Guide (teacher copy) Domain -> SS8H8: Analyze the important events that occurred after wwi & their impact on Georgia Domain -> Name unit 6 Study Guide 3377 -> Earth Science Chapter 9 – a view of Earth’s Past Section 3 – The Mesozoic and Cenozoic Eras 3377 -> Earth Science Chapter 21 Section 1 Ocean Currents 3377 -> Earth Science Chapter 19 – the ocean basins section 2 – Features of the Ocean Floor 3377 -> Earth Science Chapter 19 – the ocean basins section 1 – The Water Planet Download 0.5 Mb. Share with your friends: