Environmental Science Unit 8 Exam
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Muqua is a valley surrounded by two tall canyon walls. On a sunny day in the winter, there is a
very cold layer of air on the ground, and there is a high level of smog. This is due to ___. -
Answer✔temperature inversions
Since 1980, common air pollutants have _____ by 67% in the United States. -
Answer✔decreased
___ ozone is bad because it can damage living tissue. - Answer✔Tropospheric
___ ozone is good because it absorbs harmful UV radiation. - Answer✔Stratospheric
The _____ is United States legislation that limits vehicle and industry emissions as well as
setting standards for air quality. - Answer✔Clean Air Act
acid deposition - Answer✔the settling out of atmospheric acids onto land
industrial smog - Answer✔smog that forms when soot combines with sulfur compounds and
water droplets
photochemical smog - Answer✔smog that forms when UV light from the sun reacts with other
pollutants in the air
smog - Answer✔a mixture of air pollutants that may form over urban areas
temperature inversion - Answer✔a weather condition that occurs when a layer of cold air
becomes trapped under a layer of warm air in the troposphere
The _____ is an international treaty for reducing ozone pollutants. - Answer✔Montreal
Protocol
_____ smog is more common in developing countries. - Answer✔Industrial
catalytic converter - Answer✔a device in an automobile that reduces pollution emissions
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