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Closer Look Questions
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The Wind Chill Factor



1

What is the wind chill factor?
2

Suppose the air temperature is 10°F and you are going to drive your car at a speed of 40 miles per hour. Should the antifreeze protection in your radiator be able to not freeze at 10°F or should it protect the radiator down to -37°F?
3

What is the wind chill if the air temperature is 30°F in a 20 mph wind according to the old and new index? (Go to http://www.nws.noaa.gov/om/windchill.)

Pollution of Earth's Atmosphere



4

What is an air pollutant?
5

Can a specific waste product act as a pollutant one time but not another time?
6

What are the sources of air pollution, in order of greatest to least emissions?





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