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chapter 12
| Term | Definition |
|---|---|
| Air pollution | The contamination of the atmosphere by the introduction of pollutants from human and natural resources |
| Primary pollution | A pollutant that is put directly into the atmosphere by human ar natural activity |
| Secondary pollution | A pollutant that forms in the atmosphere by chemical reaction with primary air pollutants, natural components in the air , or both |
| Smog | Urban air pollution composed of a mixture of smoke and fog produced from industrial pollutants and burning fuels |
| Temperature inversion | The atmospheric condition in which warm air traps cooler air near Earth's surface |
| Sick building syndrome | A set of symptoms, such as headache, fatigue, eye irritation, and dizziness, that may affect workers in modern, airtight office buildings; believed to be caused by indoor pollutanats |
| Asbestos | Any of six silicate minerals that form bundles of minute fibers that are heat resistant , flexible, and durable |
| Decibel (dB) | The most common unit used to measure loudness |
| Acid Precipitation | Precipitation, such as rain, sleet, or snow ; that contains a high concentration of acids, often because of the pollution of the atmosphere |
| pH | A value that is used to express the acidity or alkalinity (basicity) of a system ; each whole number on the scale indicates a tenfold change in acidity; a pH of 7 is neutral, a pH of less than 7 is acidic, and a pH of greater than 7 is basic |
| Acid shock | The sudden runoff of large amounts of highly acidic water into lakes and streams when snow melts in the spring or when heavy rains follow a drought |
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