| A | B |
|---|
| Air Pollution | Pollution of the atmosphere |
| Asbestos | A long, thing, fibrous silicate mineral with insulating properties, which cause cancer when inhaled. |
| Chlorofluorocarbons (CFCs) | A family of organic compounds whose properties make them ideal for use in refrigeration and air-conditioning |
| Particulate Matter (PM) | Solid or liquid particles suspended in air. |
| Photochemical Oxidants | A class of air pollutants formed as a result of sunlight acting on compounds such as nitrogen oxides. |
| Photochemical Smog | Type of air pollutant caused by the reaction between pollutants and sunlight. |
| Primary Pollutants | A polluting compound that comes directly out of the smokestack, exhaust pipe, or natural emission source. |
| Smog | Fog or haze of pollution. |
| VOCs | An organic compound that evaporates at typical atmospheric temperatures. |
| Los Angeles- type smog (brown) | Photochemical Smog- caused by pollutants |
| London- type smog (Grey) | Grey smoke- caused by burning coal. |
| Secondary Pollutants | A primary pollutant that has undergone transformation in the presence of sunlight, water, oxygen or other compounds. |
| Thermal Inversion | A situation in which a relatively warm layer of air at mid-altitude covers a layer of cold, dense air below. |
| Inversion Layer | The layer of warm air that traps emissions in a thermal inversion. |
| Sick Building Syndrome | A building of toxic compounds and pollutants in an airtight space; seem in newer buildings with good insulation and tight seals. |
