Question 1

Most atmospheric ozone occurs in which layer of Earth's atmosphere?

Accepted Answer

A)  the mesosphere
B)  the stratosphere
C)  the thermosphere
D)  the troposphereE) B) and C)
F) None of the above B

Question 2

In the figure below,the intertropical surface convergence became known as the doldrums because ________.

Accepted Answer

A)  many horses died of heat exhaustion while being transported
B)  the wind moves in the wrong direction for trade ships
C)  the winds along the equator are very slow
D)  the airflow is mainly downwardE) A) and B)
F) A) and C)

Question 3

Which two gases are most abundant within Earth's modern atmosphere?

Accepted Answer

A)  nitrogen and oxygen
B)  hydrogen and helium
C)  carbon dioxide and methane
D)  water vapor and sulfur dioxideE) A) and C)
F) B) and D)

Question 4

Lines connecting points of equal atmospheric pressure on a map are termed ________.

Accepted Answer

A)  contour lines
B)  isobars
C)  isograds
D)  isothermsE) B) and C)
F) A) and B)

Question 5

According to geological evidence and computer models based on that evidence,which statement about the concentration of oxygen in our atmosphere is correct?

Accepted Answer

A)  No oxygen was present prior to the Cambrian Era;oxygen levels have uniformly risen since,and today's atmosphere is more oxygen rich than at any time in Earth's history.
B)  Oxygen levels were greatest during the Cambrian Era but have been steadily declining ever since;today's atmosphere is less oxygen rich than at any time in Earth's history.
C)  Oxygen levels have generally risen during the Phanerozoic Era but peaked during the Mesozoic Era (Age of Dinosaurs) and declined sharply in the Early Cenozoic Era.
D)  Oxygen levels have generally risen during the Phanerozoic Era but peaked during the Late Paleozoic Era (the time of coal swamp forests) and declined sharply in the Early Mesozoic Era.E) B) and D)
F) B) and C)

Question 6

As air rises,why do clouds form?

Accepted Answer

A)  raindrops converge in the lower troposphere
B)  water vapor heats up and creates steam
C)  the air cools to its dew-point temperature and condenses into liquid water
D)  snow forms in the upper troposphere and becomes visible as cloudsE) A) and B)
F) A) and C)

Question 7

Which two gases are most important in producing the greenhouse effect on Earth?

Accepted Answer

A)  nitrogen and oxygen
B)  hydrogen and helium
C)  carbon dioxide and methane
D)  nitrogen and sulfur dioxideE) A) and C)
F) B) and D)

Question 8

Winds form where ________.

Accepted Answer

A)  gravity pulls air masses downhill
B)  pressure gradients exist
C)  convective lifting occurs
D)  the Coriolis effect is greatestE) A) and B)
F) A) and C)

Question 9

Clouds generally form when air ________.

Accepted Answer

A)  is heated
B)  rises
C)  sinks
D)  is devoid of aerosolsE) None of the above
F) C) and D)

Question 10

Consult the figure below.During which period of Earth's history was the oxygen saturation in the atmosphere highest?

Accepted Answer

A)  Hadean Era
B)  Cambrian Era
C)  Carboniferous Era and Permian Era
D)  Cenozoic EraE) A) and C)
F) C) and D)

Question 11

As an air mass rises,it generally experiences ________.

Accepted Answer

A)  an increase in pressure
B)  a decrease in pressure
C)  no change in pressure
D)  either an increase or a decrease in pressure,depending on temperatureE) B) and C)
F) A) and D)

Question 12

Where air sinks,as in the subtropical horse latitudes,the air usually ________.

Accepted Answer

A)  cools as it sinks
B)  creates high pressure locally
C)  creates low pressure locally
D)  increases in relative humidity as it sinksE) A) and D)
F) B) and C)

Question 13

Because of the Coriolis effect,air that is spread northward from the equator is deflected ________.

Accepted Answer

A)  directly back to the equator
B)  to the east
C)  to the west
D)  upward,to the tropopauseE) A) and B)
F) A) and C) B

Question 14

Which of these factors is NOT important in controlling the climate of a region?

Accepted Answer

A)  latitude
B)  longitude
C)  altitude
D)  proximity to waterE) A) and C)
F) None of the above B

Question 15

When moisture-laden wind is forced over a mountain range,clouds will form because of ________ lifting.

Accepted Answer

A)  frontal
B)  convergence
C)  convective
D)  orographicE) B) and D)
F) A) and B)

Question 16

After precipitation begins,a thunderstorm has reached the ________ stage.

Accepted Answer

A)  cumulus
B)  mature
C)  supercell
D)  dissipatingE) B) and D)
F) B) and C)

Question 17

In the figure below,the area known as tornado alley forms because polar air masses frequently collide with ________.

Accepted Answer

A)  tropical air masses from the Gulf of Mexico
B)  dry air masses from the desert southwest
C)  moist Pacific air masses
D)  dry air masses descending from the Rocky MountainsE) All of the above
F) C) and D)

Question 18

To an observer traveling outward from Earth's surface into outer space,the temperature of the atmosphere ________.

Accepted Answer

A)  uniformly decreases because of atmospheric thinning
B)  uniformly increases because of increasing proximity to the Sun
C)  remains relatively constant until the very edge of the atmosphere,where the observer would experience the very cold vacuum that is interplanetary space
D)  decreases,stabilizes,increases,stabilizes,decreases,stabilizes,and,finally,increases until the edge of the atmosphere is reachedE) B) and D)
F) None of the above

Question 19

Which two gases are most abundantly emitted in volcanic outgassing?

Accepted Answer

A)  nitrogen and oxygen
B)  hydrogen and helium
C)  carbon dioxide and methane
D)  water vapor and sulfur dioxideE) A) and C)
F) A) and B)

Question 20

Which layer of the atmosphere has the lowest density?

Accepted Answer

A)  the mesosphere
B)  the stratosphere
C)  the thermosphere
D)  the troposphereE) A) and B)
F) A) and C)

Exam 20: An Envelope of Gas: Earths Atmosphere and Climate

Most atmospheric ozone occurs in which layer of Earth's atmosphere?

Correct AnswerverifiedB

In the figure below,the intertropical surface convergence became known as the doldrums because ________.

Correct AnswerverifiedShow Answer

Which two gases are most abundant within Earth's modern atmosphere?

Correct AnswerverifiedShow Answer

Lines connecting points of equal atmospheric pressure on a map are termed ________.

Correct AnswerverifiedShow Answer

According to geological evidence and computer models based on that evidence,which statement about the concentration of oxygen in our atmosphere is correct?

Correct AnswerverifiedShow Answer

As air rises,why do clouds form?

Correct AnswerverifiedShow Answer

Which two gases are most important in producing the greenhouse effect on Earth?

Correct AnswerverifiedShow Answer

Winds form where ________.

Correct AnswerverifiedShow Answer

Clouds generally form when air ________.

Correct AnswerverifiedShow Answer

Consult the figure below.During which period of Earth's history was the oxygen saturation in the atmosphere highest?

Correct AnswerverifiedShow Answer

As an air mass rises,it generally experiences ________.

Correct AnswerverifiedShow Answer

Where air sinks,as in the subtropical horse latitudes,the air usually ________.

Correct AnswerverifiedShow Answer

Because of the Coriolis effect,air that is spread northward from the equator is deflected ________.

Correct AnswerverifiedB

Which of these factors is NOT important in controlling the climate of a region?

Correct AnswerverifiedB

When moisture-laden wind is forced over a mountain range,clouds will form because of ________ lifting.

Correct AnswerverifiedShow Answer

After precipitation begins,a thunderstorm has reached the ________ stage.

Correct AnswerverifiedShow Answer

In the figure below,the area known as tornado alley forms because polar air masses frequently collide with ________.

Correct AnswerverifiedShow Answer

To an observer traveling outward from Earth's surface into outer space,the temperature of the atmosphere ________.

Correct AnswerverifiedShow Answer

Which two gases are most abundantly emitted in volcanic outgassing?

Correct AnswerverifiedShow Answer

Which layer of the atmosphere has the lowest density?

Correct AnswerverifiedShow Answer

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B

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B

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