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Understanding Sources of Air Pollution

Learn about pollutants in the air and water, caused by natural sources like fires and volcanoes or human activities such as farming and burning fossil fuels. Explore how smog and acid rain harm the environment through EPA regulations.

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Understanding Sources of Air Pollution

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  1. Air Quality Section 15-4

  2. Sources of Pollution • Pollutants – harmful substances in the air, water or soil. • Natural sources – fires, soil erosion, dust storms, volcanoes, mold, and pollen • Human Activity – farming, construction, burning fossil fuels

  3. Smog and Acid Rain • London-type smog – smoke from factories and fog polluted London • Photochemical smog – formed by the action of sunlight on pollutants such as hydrocarbons and nitrogen oxides

  4. Acid Rain • Acid rain – rain that is more acidic than normal. Moisture in air mixes with nitrogen oxides or sulfur oxides • Damages buildings, statues. Kills animals and plants

  5. Environmental Protection Agency • EPA – government agency that monitors air pollution in the US.

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