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Geog 1900 Quizzes (Exam One) – Questions & Answers
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Geog 1900 Quizzes (Exam One) – Questions & AnswersThe average length of time that individual molecules of a given substance
remain in the atmosphere is called the Correct Ans - residence time
Methane: A. is a permanent gas. B. is a good reflector of thermal radiation. C. is
removed from the atmosphere by the digestive processes of cattle. D. has
increased in concentration over the last 50 or so years Correct Ans - D
The aurora borealis: A. is a different type of physical phenomenon than the
aurora australis. B. gains its energy from sunlight reflected from Earth. C. is
typically strongest near the equator. D. emits light as electrons move from
higher orbits around the nucleus to lower ones. Correct Ans - D
Relatively speaking, the earth's atmosphere is: A. very thick when compared
to the earth's diameter. B. very thin when compared to the earth's diameter. C.
stops at the top of the troposphere. D. stops when we reach "space."
Correct Ans - B
The maximum concentrations of ozone are found in the: Correct Ans -
stratosphere.
Which of the following will increase given an increase in pressure?
Correct Ans - Density
The atmosphere is a mixture of Correct Ans - gas molecules, small
particulates, and moisture
The D-layer of the ionosphere Correct Ans - has most of its electrons
combined with positively charged ions at night
The four layers of the atmosphere from the top down are Correct Ans -
thermosphere, mesosphere, stratosphere, troposphere
The thermosphere: A. has a low heat content. B. would feel very hot to an
astronaut. C. is characterized by a decrease in temperature as height
increases. D. is part of the homosphere. Correct Ans - A. has a low heat
content
, Aerosols: A. include cloud droplets. B. have little effect on weather. C. are
formed by physical processes, not chemical processes. D. can be either solid or
liquid. Correct Ans - D. can be either solid or liquid.
The troposphere: A. has height that is relatively consistent at about ten
kilometers. B. stays about the same temperature above three kilometers. C.
contains a bit less than half the atmosphere's mass. D. is characterized in part
by vertical mixing of air. Correct Ans - D. is characterized in part by
vertical mixing of air.
The "stratosphere" warms because of Correct Ans - the interaction of
ozone and ultraviolet light.
The atmosphere: A. has vertical wind speeds that are typically around one-
tenth that of horizontal wind speeds. B. is about as deep as the planet is wide.
C. is more than 99 percent contained within the first 60 miles from the earth's
surface. D. has not changed substantially in composition since the earth
formed over four billion years ago Correct Ans - C. is more than 99
percent contained within the first 60 miles from the earth's surface.
What do you notice concerning the percentage of permanent gasses
throughout the atmosphere (all levels)? Correct Ans - It is the same
throughout the atmosphere from the surface up.
Carbon dioxide: A. comprises up to two percent of the atmospheric gases. B. is
being removed from the atmosphere faster than it is being inputted. C. is
removed from the atmosphere by photosynthesis. D. is not present in
significant amounts in the atmosphere of Venus. Correct Ans - C. is
removed from the atmosphere by photosynthesis.
. The stratosphere: A. is part of the heterosphere. B. has a low moisture
content compared to the troposphere. C. typically gets colder as elevation
increases. D. is where much of Earth's weather occurs. Correct Ans - B.
has a low moisture content compared to the troposphere.
The troposphere: A. is thinnest at the tropics. B. maintains a relatively
constant temperature. C. is thicker in summer. D. often disappears near the
poles in winter. Correct Ans - C. is thicker in summer.
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