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12.24: Outdoor Air Pollution

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

acid rain

Low-pH precipitation that forms when air pollution combines with water.

air pollution

Pollution caused by chemical substances and particles released into the air mainly by human actions, such as the burning of fossil fuels.

fossil fuels

Remains of long-dead organisms that now serve as an energy source, such as as oil, coal, or natural gas.

global warming

Global rise in Earth’s temperature due to increases of greenhouse gasses in the atmosphere.

greenhouse gases

Gas that lets in light energy but does not let heat escape, contributing to global warming.

outdoor air pollution

Chemical substances and particles released into the outside air.

ozone

Pollutant in the lower atmosphere; created when some pollutants react with sunlight.

primary pollutants

Harmful chemical substances and particles added directly to the air.

secondary pollutants

Harmful chemical substances formed when primary pollutants interact with sunlight, air, or each other.

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Difficulty Level:
At Grade
Grades:
7 , 8
Date Created:
Nov 29, 2012
Last Modified:
Sep 11, 2016
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