chapter 2 ISTAT exam 1 UPDATED
ACTUAL Questions and CORRECT
Answers
troposphere - CORRECT ANSWER - where most weather occurs, where we live, 75% of
the mass of the entire atmosphere, overall pressure is highest at this level and gradually decreases
with each layer
Stratosphere - CORRECT ANSWER - ozone layer
Mesosphere - CORRECT ANSWER - coldest temperature in atmosphere, where meteors
burn up
Thermosphere - CORRECT ANSWER - ionosphere which reflects radio waves, large
temperature fluctuations
Exosphere - CORRECT ANSWER - outmost layer until space, air is thin, overall pressure
is the lowest at this layer
describe the composition of inhaled and exhaled air - CORRECT ANSWER - When we
inhale 78% of it is nitrogen and 21% of it is oxygen. When we exhale 78% of it is nitrogen, 16%
of it is oxygen and 4% of it is carbon dioxide.
air pollutants (5) - CORRECT ANSWER - Carbon monoxide (CO), Ozone (O3), Sulfur
dioxide (SO2), Nitrogen oxides (NOX), Particulate matter (PM)
carbon monoxide - CORRECT ANSWER - 1 carbon molecule and 1 oxygen molecule;
automobile exhaust, charcoal fires, propane-fueled camping fires; interferes with the ability of
your hemoglobin to carry oxygen (kills you if consumed in large quantities); released as a gas;
primary pollutant
ACTUAL Questions and CORRECT
Answers
troposphere - CORRECT ANSWER - where most weather occurs, where we live, 75% of
the mass of the entire atmosphere, overall pressure is highest at this level and gradually decreases
with each layer
Stratosphere - CORRECT ANSWER - ozone layer
Mesosphere - CORRECT ANSWER - coldest temperature in atmosphere, where meteors
burn up
Thermosphere - CORRECT ANSWER - ionosphere which reflects radio waves, large
temperature fluctuations
Exosphere - CORRECT ANSWER - outmost layer until space, air is thin, overall pressure
is the lowest at this layer
describe the composition of inhaled and exhaled air - CORRECT ANSWER - When we
inhale 78% of it is nitrogen and 21% of it is oxygen. When we exhale 78% of it is nitrogen, 16%
of it is oxygen and 4% of it is carbon dioxide.
air pollutants (5) - CORRECT ANSWER - Carbon monoxide (CO), Ozone (O3), Sulfur
dioxide (SO2), Nitrogen oxides (NOX), Particulate matter (PM)
carbon monoxide - CORRECT ANSWER - 1 carbon molecule and 1 oxygen molecule;
automobile exhaust, charcoal fires, propane-fueled camping fires; interferes with the ability of
your hemoglobin to carry oxygen (kills you if consumed in large quantities); released as a gas;
primary pollutant
