Env Finals 17
The layer of air closest to the Earth, the layer we live in, is the ____________________.
troposphere
The major legislation that dictates federal air pollution policy is the ____________________ ____________________ ____________________.
clean air act
____________________ in the stratosphere absorbs ultraviolet radiation.
ozone
The ozone hole occurs in the layer of the atmosphere known as the ____________________.
stratosphere
As early multicellular organisms evolved, they released more ____ into the atmosphere.
oxygen
The most abundant constituent of our atmosphere is ____.
nitrogen
A/An ____ is used to measure air pressure.
barometer
The largest source of air pollutants in the United States is/are ____.
transportation
____ is the release of volatiles from Earth’s mantle in volcanic eruptions.
outgassing
During photosynthesis, plants convert ____ and ____ to organic sugars and oxygen.
carbon dioxide, water
Solar energy breaks oxygen molecules apart in the stratosphere, releasing ____, which combine(s) with additional oxygen molecules to form ____.
oxygen atoms, ozone
the atmosphere
becomes less dense with increases altitude
The highest portion of the atmosphere that absorbs high-energy radiation is the:
thermosphere
Which of the following orders of the layers of the atmosphere is correct? (Start with the lowest layer.)
troposphere < stratosphere < mesosphere < thermosphere
The primary source of sulfur oxide pollution is/are:
coal-fired electric generators
If pure coal burned completely, it would produce:
carbon dioxide and water
smog is produce
when sunlight reacts with automobile exhaust
Chlorofluorocarbons
react to destroy ozone
T/F The Clean Air Act has not led to a decrease in the total pollution level or improved air quality in the United States in the past 30 years.
False
T/F Ozone is both a pollutant and a beneficial component of the atmosphere, depending on elevation.
True
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