Question 1

The formation of raindrops by collision and coalescence of smaller cloud droplets is strongly influenced by:

Accepted Answer

A)   number of droplets in the cloud.
B)   presence of dust.
C)   dew point temperature of the cloud.
D)   electrical charges on the droplets.
E)   solar radiation.F) A) and B)
G) A) and C)

Question 2

The process of cloud seeding is based on the theory that:

Accepted Answer

A)   silver iodide crystals make droplets heavier than usual so that they fall to the ground.
B)   it is impossible to add too many freezing nuclei; the more you add, the more rain will fall.
C)   silver iodide crystals act as freezing nuclei and enhance the Bergeron process.
D)   warm clouds will produce more rain if droplets are encouraged to freeze inside the cloud.E) B) and C)
F) A) and B)

Question 3

Most rainfall in the middle latitudes begins as snow formed through the Bergeron Process.

Accepted Answer

A) True 
 B)False

Question 4

The largest hailstone ever recorded in the United States weighed over 5 pounds.

Accepted Answer

A) True 
 B)False

Question 5

Thunder and lightning are associated with the________ cloud.

Accepted Answer

A)   cirrus
B)   cirrostratus
C)   nimbostratus
D)   altostratus
E)   cumulonimbusF) None of the above
G) A) and B)

Question 6

Which of these is a mid- level cloud?

Accepted Answer

A)   cirrus
B)   altostratus
C)   stratocumulus
D)   cumulus
E)   stratusF) A) and B)
G) B) and D)

Question 7

Steam fogs and frontal fogs are both types of ________fogs.

Accepted Answer

The answer of Steam fogs and frontal fogs are both...

Question 8

Advection fogs form best when there is no wind.

Accepted Answer

A) True 
 B)False

Question 9

You are flying in an airplane at 36,000 feet above sea level. You see lightning outside your plane window. The cloud that is close by is:

Accepted Answer

A)   cirrus.
B)   altocumulus.
C)   stratus.
D)   cumulonimbus.
E)   cumulus.F) A) and B)
G) C) and D)

Question 10

Cumulus clouds can develop as a consequence of local convection.

Accepted Answer

A) True 
 B)False

Question 11

What is the basic reason why condensation is not very important in causing a cloud droplet to grow to raindrop size?

Accepted Answer

A)   There are too many droplets competing for the available water vapor.
B)   Not enough condensation nuclei are present.
C)   Electrical effects limit condensation.
D)   The question is incorrect; condensation is very important.E) A) and B)
F) A) and D)

Question 12

Frost prevention by air mixing requires that a temperature inversion be present in the air layer near the ground.

Accepted Answer

A) True 
 B)False

Question 13

Contrails formed by aircrafts most closely mimic which type of cloud?

Accepted Answer

A)   cirrocumulus
B)   stratus
C)   fair- weather cumulus
D)   cirrusE) A) and D)
F) None of the above

Question 14

The growth of a hailstone usually involves everything EXCEPT:

Accepted Answer

A)   being carried several times into the frozen region of the cloud by updrafts.
B)   spontaneous freezing of large water droplets into hail stones.
C)   the development of alternating layers of clear and cloudy ice.
D)   ice pellets encountering supercooled water droplets.E) C) and D)
F) None of the above

Question 15

Under some conditions, flying a helicopter just above a fog deck can help to disperse the fog.

Accepted Answer

A) True 
 B)False

Question 16

A cloud that forms liquid droplets has a relative humidity of 100 percent with respect to the liquid droplets. If temperature is <0°C and ice crystals form in this cloud, the relative humidity will be_________ with respect to the ice crystals.

Accepted Answer

A)   0 percent
B)   100 percent
C)   less that 100 percent
D)   more than 100 percentE) B) and C)
F) A) and D)

Question 17

Snowfall depths can be tricky to measure because:

Accepted Answer

A)   there is no automated instrument capable of measuring snowfall.
B)   snow usually melts too quickly once it reaches the surface.
C)   it is difficult to locate instruments far enough away from buildings.
D)   wind causes snow to vary in depth across the surface.E) A) and D)
F) All of the above

Question 18

Sleet is produced only when all of the air between the ground and the cloud has a temperature below freezing.

Accepted Answer

A) True 
 B)False

Question 19

Which cloud type is most likely to produce a brief yet intense period of precipitation?

Accepted Answer

The answer of Which cloud type is most likely to...

Question 20

Sleet is essentially rain that freezes before reaching the surface.

Accepted Answer

A) True 
 B)False

Exam 5: Forms of Condensation and Precipitation

The largest hailstone ever recorded in the United States weighed over 5 pounds.

Correct AnswerverifiedShow Answer

Advection fogs form best when there is no wind.

Correct AnswerverifiedShow Answer

Thunder and lightning are associated with the________ cloud.

Correct AnswerverifiedShow Answer

Which of these is a mid- level cloud?

Correct AnswerverifiedShow Answer

Sleet is essentially rain that freezes before reaching the surface.

Correct AnswerverifiedShow Answer

Cumulus clouds can develop as a consequence of local convection.

Correct AnswerverifiedShow Answer

Most rainfall in the middle latitudes begins as snow formed through the Bergeron Process.

Correct AnswerverifiedShow Answer

You are flying in an airplane at 36,000 feet above sea level. You see lightning outside your plane window. The cloud that is close by is:

Correct AnswerverifiedShow Answer

Snowfall depths can be tricky to measure because:

Correct AnswerverifiedShow Answer

Steam fogs and frontal fogs are both types of ________fogs.

Correct AnswerverifiedShow Answer

A cloud that forms liquid droplets has a relative humidity of 100 percent with respect to the liquid droplets. If temperature is <0°C and ice crystals form in this cloud, the relative humidity will be_________ with respect to the ice crystals.

Correct AnswerverifiedShow Answer

Under some conditions, flying a helicopter just above a fog deck can help to disperse the fog.

Correct AnswerverifiedShow Answer

Which cloud type is most likely to produce a brief yet intense period of precipitation?

Correct AnswerverifiedShow Answer

The process of cloud seeding is based on the theory that:

Correct AnswerverifiedShow Answer

The formation of raindrops by collision and coalescence of smaller cloud droplets is strongly influenced by:

Correct AnswerverifiedShow Answer

Contrails formed by aircrafts most closely mimic which type of cloud?

Correct AnswerverifiedShow Answer

Frost prevention by air mixing requires that a temperature inversion be present in the air layer near the ground.

Correct AnswerverifiedShow Answer

Sleet is produced only when all of the air between the ground and the cloud has a temperature below freezing.

Correct AnswerverifiedShow Answer

The growth of a hailstone usually involves everything EXCEPT:

Correct AnswerverifiedShow Answer

What is the basic reason why condensation is not very important in causing a cloud droplet to grow to raindrop size?

Correct AnswerverifiedShow Answer

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