1. The Atmosphere Air Quality Chapter 1 Section 2

2. Pollutants Harmful substances in the air, water & soil Mostly due to burning fossil fuels –Coal –Oil –Gasoline –Diesel fuel

3. Particles Natural Sources –Forest fires –Dust storms –Soil erosion –Volcanoes Human Activities –Burning fossil fuels

4. Photochemical Smog Chemical that react ith each other when sunlight is present –Nitrogen oxides –Sulfur oxides –Hydrocarbons –Ozone Smog –Smoke + fog

5. Acid Rain Rain that contains more acid than normal –Nitrogen oxides  Nitric Acid –Sulfur oxides  Sulfuric Acid Can kill plants Dissolves animal eggs

6. Improving Air Quality –Cleaner cars Less emissions & improved gas efficiency –Clearer power plants scrubbers  But… –More cars & more power plants now