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List the two different precipitation measurements that are applied to snowfall.

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Snow depth and the l...

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

A) True
B) False

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Why are high altitude clouds always so thin?


A) Winds are faster at high levels.
B) Not enough particulates are present.
C) Very little water vapor is present.
D) Air layers are stable there.
E) Air layers are unstable there.

F) B) and C)
G) A) and E)

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The conditions that persist along the West Coast of the U.S.that are conducive to fog formation are:


A) inversions and a warm land surface.
B) moist air moving over a cold surface.
C) inversions and a warm water surface.
D) steep lapse rate and cold surface.
E) steep lapse rate and a warm surface.

F) A) and D)
G) B) and D)

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Under what conditions does light and fluffy snow form?


A) warm air and low humidity
B) warm air and high humidity
C) cold air and low humidity
D) cold air and no humidity

E) C) and D)
F) A) and B)

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Both gravity and friction act to pull a raindrop to Earth.

A) True
B) False

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Explain how a raindrop forms through the Bergeron process.

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The Bergeron process occurs in a cold cl...

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A halo around the Sun or the Moon indicates the cloud ________ is present.


A) nimbostratus
B) cirrostratus
C) cirrus
D) altostratus
E) cumulonimbus

F) None of the above
G) A) and B)

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Water condensation can occur even if the air is not saturated.

A) True
B) False

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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:


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

F) A) and E)
G) A) and C)

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Raindrops form by condensation.

A) True
B) False

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


A) Not enough particulates are present.
B) Condensation is too slow.
C) Electrical effects limit condensation.
D) The question is incorrect;condensation is very important.
E) Latent heat limits condensation.

F) B) and E)
G) A) and D)

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The important difference between liquid droplets and ice crystals in a supercooled cloud is that ice crystals:


A) are more pure.
B) are colder.
C) grow much more rapidly.
D) are smaller.
E) increase the water vapor content of the cloud.

F) A) and E)
G) B) and C)

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How does drizzle differ from rain?


A) It is warmer.
B) It has a smaller diameter.
C) It is evaporating before it hits the ground.
D) It forms at higher altitudes.

E) A) and C)
F) A) and D)

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Frost tends to form when the surface dew point temperature is below freezing.

A) True
B) False

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A standard rain gauge magnifies rainfall ten times.

A) True
B) False

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Which association is correct?


A) low cloud...stratus
B) middle cloud...cirrus
C) vertical cloud...nimbostratus
D) high cloud...altostratus
E) low cloud...cirrocumulus

F) B) and D)
G) None of the above

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Sleet is essentially rain that freezes before reaching the surface.

A) True
B) False

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Which association is not correct?


A) high cloud...stratus
B) middle cloud...altostratus
C) low cloud...stratocumulus
D) high cloud...cirrus
E) vertical cloud...cumulus

F) B) and D)
G) A) and E)

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