Chap 15: Air Pollution Flashcards Preview

AP Environmental > Chap 15: Air Pollution > Flashcards

Flashcards in Chap 15: Air Pollution Deck (12):
1

Particulate Matter (PM)
[aka particulates or particles]

Solid or liquid particles suspended in air

2

Photochemical oxidants

Class of air pollutants formed as a result of sunlight acting on compounds (ie. nitrogen oxide and sulfur dioxide)

3

Haze

Reduced visibility

4

Smog

Mixture of oxidants and particulate matter

5

Photochemical smog

Dominated by oxidants (ie. ozone)
[aka Los Angeles-type smog; brown smog; and sulfurous smog]
Dominated by sulfur dioxide & sulfate compounds [london type smog ; grey smog]

6

Volatile organic compounds (VOCs)

Often hydrocarbons : compounds with carbon-hydrogen bonds
(ie. gasoline, meter fluid, dry-cleaning fluid, etc)

7

Primary pollutants

Polluting compounds directly from smokestacks/smoke pipes/ natural emission sources

8

Secondary pollutants

Primary pollutants that have transformed under the presence of sunlight, water, oxygen, or other compounds

9

Thermal inversion

A situation in which a relatively warm layer of air at mid - altitude covers a layer of cold air below (and blocks pollutants from escaping)

10

Inversion layer

Traps emissions that accumulate beneath it

11

Chlorofluorocarbons (CFCs)

Family of organic compounds whose properties make them ideal for use in refrigeration and air conditioning

12

Sick building syndrome

Buildup of toxic compounds and pollutants in an airtight space; seen in newer buildings with good insulation and tight seals against air leaks