Question 1

When rising air cools to its dew-point temperature, its relative humidity typically is ____ percent.

Accepted Answer

A)  60
B)  70
C)  80
D)  90
E)  100F) D) and E)
G) All of the above

Question 2

It is possible for a layer of air to be convectively unstable and absolutely stable at the same time.

Accepted Answer

A) True 
 B)False

Question 3

Inversions that form as air slowly sinks over a large area are called ____ inversions.

Accepted Answer

A)  surface
B)  surficial
C)  ground-cover
D)  ground
E)  subsidenceF) All of the above
G) A) and E)

Question 4

At Earth's surface, a rising saturated air parcel cools at the ____.

Accepted Answer

A)  moist adiabatic rate
B)  dry adiabatic rate
C)  condensation rate
D)  saturation rate
E)  development rateF) B) and C)
G) A) and E)

Question 5

When cloud elements become arranged in rows they are called cloud ____.

Accepted Answer

A)  roads
B)  trails
C)  billows
D)  rows
E)  streetsF) A) and B)
G) D) and E)

Question 6

Dry adiabatic cooling and warming rates are approximately ____ of change in elevation.

Accepted Answer

A)  4 degrees Celsius for every 1,000 m
B)  6 degrees Celsius for every 1,000 m
C)  8 degrees Celsius for every 1,000 m
D)  10 degrees Celsius for every 1,000 m
E)  12 degrees Celsius for every 1,000 mF) None of the above
G) D) and E)

Question 7

Which of the following is NOT a typical reason surface air warms?

Accepted Answer

A)  Daytime solar heating of the surface
B)  An influx of warm air brought in by the wind
C)  Air moving over a warm surface
D)  Warm advection
E)  Clouds emitting infrared radiationF) B) and C)
G) A) and E)

Question 8

A knowledge of air stability is important because it determines ____.

Accepted Answer

A)  the direction of movement of storms
B)  the vertical motion of air
C)  the movement of high pressure areas
D)  seasonal weather patterns
E)  the movement of low pressure systemsF) B) and D)
G) A) and C)

Question 9

The stability of the atmosphere above the condensation level plays a major role in determining the vertical growth of a cumulus cloud. When a deep conditionally unstable layer exists above the cloud base, ____ are likely to grow.

Accepted Answer

A)  cumulus humilis
B)  billow clouds
C)  cumulus congestus
D)  cumulonimbus
E)  lenticular cloudsF) B) and D)
G) A) and B)

Question 10

If the environmental lapse rate is less than the moist adiabatic rate, the atmosphere is ____.

Accepted Answer

A)  conditionally unstable
B)  absolutely stable
C)  absolutely unstable
D)  neutrally stable
E)  superadiabaticF) A) and C)
G) None of the above

Question 11

How does daytime heating at the ground during the day affect atmospheric stability?

Accepted Answer

On a typical day, the atmosphere is usua...

Question 12

If an air parcel is given a small push upward and it continues to move upward on its own accord, the atmosphere is said to be ____.

Accepted Answer

A)  stable
B)  unstable
C)  buoyant
D)  dynamic
E)  supersaturatedF) None of the above
G) A) and C)

Question 13

The elevation where clouds form is called ____ level.

Accepted Answer

A)  condensation
B)  saturation
C)  precipitation
D)  cloud formation
E)  adiabaticF) C) and D)
G) None of the above

Question 14

If you were to take a trip during the summer from Ohio to Nevada, you would most likely observe that afternoon cumulus clouds as you travel west.

Accepted Answer

A)  have higher cloud bases
B)  are larger
C)  form earlier in the day
D)  Disappear
E)  form later in the dayF) A) and E)
G) None of the above

Question 15

What is a stable atmosphere, and how can it form?

Accepted Answer

Atmospheric stability is a condition of ...

Question 16

The potential instability brought about by the lifting of a stable layer whose surface is humid and whose top is "dry" is called ____________________.

Accepted Answer

convective...

Question 17

A hot "bubble" of air is called a ____________________.

Accepted Answer

The answer of A hot "bubble" of air is called...

Question 18

If an air parcel is given a small push upward and it falls back to its original position, the atmosphere is said to be ____.

Accepted Answer

A)  stable
B)  unstable
C)  isothermal
D)  neutral
E)  adiabaticF) A) and C)
G) B) and E)

Question 19

Which environmental lapse rate represents the most UNSTABLE atmosphere in a layer of unsaturated air?

Accepted Answer

A)  1 degree Celsius per 1,000 m
B)  3 degrees Celsius per 1,000 m
C)  6 degrees Celsius per 1,000 m
D)  9 degrees Celsius per 1,000 m
E)  11 degrees Celsius per 1,000 mF) A) and C)
G) B) and E)

Question 20

Usually when a cumulonimbus cloud begins to dissipate, the bottom half of the cloud dissipates first.

Accepted Answer

A) True 
 B)False

Exam 6: Stability and Cloud Development

It is possible for a layer of air to be convectively unstable and absolutely stable at the same time.

Correct AnswerverifiedShow Answer

The potential instability brought about by the lifting of a stable layer whose surface is humid and whose top is "dry" is called ____________________.

Correct Answerverifiedconvective...View AnswerShow Answer

A knowledge of air stability is important because it determines ____.

Correct AnswerverifiedShow Answer

When rising air cools to its dew-point temperature, its relative humidity typically is ____ percent.

Correct AnswerverifiedShow Answer

Which environmental lapse rate represents the most UNSTABLE atmosphere in a layer of unsaturated air?

Correct AnswerverifiedShow Answer

How does daytime heating at the ground during the day affect atmospheric stability?

Correct AnswerverifiedOn a typical day, the atmosphere is usua...View AnswerShow Answer

If you were to take a trip during the summer from Ohio to Nevada, you would most likely observe that afternoon cumulus clouds as you travel west.

Correct AnswerverifiedShow Answer

Dry adiabatic cooling and warming rates are approximately ____ of change in elevation.

Correct AnswerverifiedShow Answer

The stability of the atmosphere above the condensation level plays a major role in determining the vertical growth of a cumulus cloud. When a deep conditionally unstable layer exists above the cloud base, ____ are likely to grow.

Correct AnswerverifiedShow Answer

At Earth's surface, a rising saturated air parcel cools at the ____.

Correct AnswerverifiedShow Answer

If an air parcel is given a small push upward and it continues to move upward on its own accord, the atmosphere is said to be ____.

Correct AnswerverifiedShow Answer

Usually when a cumulonimbus cloud begins to dissipate, the bottom half of the cloud dissipates first.

Correct AnswerverifiedShow Answer

If an air parcel is given a small push upward and it falls back to its original position, the atmosphere is said to be ____.

Correct AnswerverifiedShow Answer

Inversions that form as air slowly sinks over a large area are called ____ inversions.

Correct AnswerverifiedShow Answer

A hot "bubble" of air is called a ____________________.

Correct AnswerverifiedShow Answer

Which of the following is NOT a typical reason surface air warms?

Correct AnswerverifiedShow Answer

If the environmental lapse rate is less than the moist adiabatic rate, the atmosphere is ____.

Correct AnswerverifiedShow Answer

The elevation where clouds form is called ____ level.

Correct AnswerverifiedShow Answer

What is a stable atmosphere, and how can it form?

Correct AnswerverifiedAtmospheric stability is a condition of ...View AnswerShow Answer

When cloud elements become arranged in rows they are called cloud ____.

Correct AnswerverifiedShow Answer

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convective...
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On a typical day, the atmosphere is usua...
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Atmospheric stability is a condition of ...
View Answer

Correct Answer
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