APES Chapter 15 - Atmospheric Pollution and Stratospheric Ozone Depletion

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Air pollution

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22 Terms

1

Air pollution

The introduction of chemicals, particulate matter, or microorganisms into the atmosphere at concentrations high enough to harm plants, animals, and materials such as buildings, or to alter ecosystems.

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2

Particulate matter (PM)

Solid or liquid particles suspended in air. (Also known as "particulates"; "particles.")

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3

Particulates

See "particulate matter."

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4

Particles

See "particulate matter."

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5

Haze

Reduced visibility.

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6

Photochemical oxidant

A class of air pollutants formed as a result of sunlight acting on compounds such as nitrogen oxides.

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7

Ozone (O3)

A secondary pollutant made up of three oxygen atoms bound together.

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8

Smog

A type of air pollution that is a mixture of oxidants and particulate matter.

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9

Photochemical smog

Smog that is dominated by oxidants such as ozone. (Also known as "Los Angeles–type smog"; "brown smog.")

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10

Los Angeles–type smog

See "photochemical smog."

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11

Brown smog

See "photochemical smog."

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12

Sulfurous smog

Smog dominated by sulfur dioxide and sulfate compounds. (Also known as "London-type smog"; "gray smog"; "industrial smog.")

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13

London-type smog

See "sulfurous smog."

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14

Gray smog

See "sulfurous smog."

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15

Industrial smog

See "sulfurous smog."

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16

Volatile organic compound (VOC)

An organic compound that evaporates at typical atmospheric temperatures.

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17

Primary pollutant

A polluting compound that comes directly out of a smokestack, exhaust pipe, or natural emission source.

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18

Secondary pollutant

A primary pollutant that has undergone transformation in the presence of sunlight, water, oxygen, or other compounds.

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19

Thermal inversion

A situation in which a relatively warm layer of air at mid-altitude covers a layer of cold, dense air below.

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20

Inversion layer

The layer of warm air that traps emissions in a thermal inversion.

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21

Asbestos

A long, thin, fibrous silicate mineral with insulating properties, which can cause cancer when inhaled.

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22

Sick building syndrome

A buildup of toxic pollutants in an airtight space, seen in newer buildings.

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