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Chapter 13 Sec 1
Vocabulary Chapter 13 Section 1
Vocabulary | Definition |
---|---|
air pollution | a change to the atmosphere that has harmful effects |
emissions | solid particles and gases from motor vehicles that are released into the air |
ozone | a form of oxygen that has three oxygen atoms in each molecule instead of the usual two |
photochemical smog | a brownish haze that is a mixture of ozone and other chemicals that is formed when nitrogen oxides, hydrocarbons, and other pollutants react with one another in the presence of sunlight |
temperature inversion | a condition in which a layer of warm air prevents the rising air from escaping |
acid rain | rain that is more acidic than normal, caused by the release of molecules of sulfur dioxide and nitrogen oxide into the air |
ozone layer | the layer of the upper atmosphere about 30 kilometers above Earth's surface where ozone is concentrated |
chlorofluorocarbon | one of a group of chlorine compounds formerly used in air conditioners and refrigerators |