Question 1

Which association is incorrect?

Accepted Answer

A)   anvil - front of the thunderstorm
B)   downdraft - precipitation
C)   mesocyclone - region of tornado formation
D)   tornado watch - a tornado has been sighted on the ground

Question 2

How is global climate change expected to impact thunderstorm activity in the United States over the next century?

Accepted Answer

A)   Climate change will have no definable impact on thunderstorm days.
B)   Thunderstorm days are expected to decrease in the Southeastern United States.
C)   More thunderstorms will occur in every state of the nation.
D)   The environment necessary for severe thunderstorms will occur on more days for most locations east of the Rockies.

Question 3

What causes the dissipating stage of a thunderstorm?

Accepted Answer

A)   spreading downdraft cuts off air inflow
B)   converging winds aloft
C)   loss of radiant energy from cloud top
D)   converging surface winds
E)   release of latent heat within the cloud

Question 4

The strongest tornados are ranked ________on the Enhanced Fujita Intensity Scale.

Accepted Answer

The answer of The strongest tornados are ranked ________on the...

Question 5

Which of the following U.S. states experiences the most thunderstorms each year?

Accepted Answer

A)   Oklahoma
B)   Texas
C)   Colorado
D)   Florida

Question 6

Why are air mass thunderstorms most likely to occur in the midafternoon?

Accepted Answer

A)   Water- vapor contents are too low at night.
B)   Upper- level winds are too fast at night and in morning.
C)   Atmosphere is most unstable at that time.
D)   It takes all day for them to mature.

Question 7

Which of the numbers listed below best represents the percentage of thunderstorms that produce tornadoes?

Accepted Answer

A)   fewer than 1 percent
B)   slightly more than 50 percent
C)   about 10 percent
D)   nearly 25 percent

Question 8

Severe thunderstorm development occurs independently from the air flow aloft.

Accepted Answer

A) True 
 B)False

Question 9

About what percent of thunderstorms in the United States become severe?

Accepted Answer

A)   10%
B)   20%
C)   50%
D)   25%

Question 10

The diameter of a typical tornado funnel cloud would be:

Accepted Answer

A)   150 - 600 meters.
B)   1000 - 2500 meters.
C)   3000 meters.
D)   50 - 100 meters.

Question 11

It is impossible to warn people of every lightning flash because:

Accepted Answer

A)   it kills few people compared to the other types of severe weather, so it isn't studied as much.
B)   scientists don't understand exactly how it forms.
C)   it strikes so frequently and in so many places.
D)   people are only struck by lightning a few times each decade, so most don't listen to warnings.

Question 12

Where in the thunderstorm would you be most likely to find mammatus clouds?

Accepted Answer

A)   Letter E
B)   Letter F
C)   Letter C
D)   Letter D

Question 13

A thunderstorm's direction of movement over the ground is determined by the gust front.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following statements is NOT true of tornadoes?

Accepted Answer

A)   associated with cumulonimbus clouds
B)   occur most frequently in the spring of the year
C)   generally move from the southwest toward the northeast
D)   usually occur along the warm front of a midlatitude cyclone

Question 15

The anvil top of a thunderstorm often marks the beginning of the stratosphere.

Accepted Answer

A) True 
 B)False

Question 16

About 50 percent of North American tornadoes are classified as violent (EF4- EF5).

Accepted Answer

A) True 
 B)False

Question 17

What makes the narrow, rotating air column or vortex of a tornado visible?

Accepted Answer

Either the condensation of wat...

Question 18

Extreme evaporative cooling can sometimes produce explosions of straight- line winds called:

Accepted Answer

A)   gust fronts.
B)   tornadoes.
C)   downbursts.
D)   air bombs.

Question 19

What is entrainment?

Accepted Answer

A)   a line of thunderstorms, one feeding into the next
B)   warm, moist air fed into a thunderstorm by the updraft
C)   rotation from the parent cloud transferring into a tornado
D)   the process of cool, dry air being pulled into a thunderstorm by the downdraft

Question 20

The circulation in the immediate vicinity of a thunderstorm is:

Accepted Answer

A)   variable and gusty.
B)   anticyclonic.
C)   calm.
D)   cyclonic.

Exam 10: Thunderstorms and Tornadoes

What causes the dissipating stage of a thunderstorm?

Correct AnswerverifiedShow Answer

The diameter of a typical tornado funnel cloud would be:

Correct AnswerverifiedShow Answer

Extreme evaporative cooling can sometimes produce explosions of straight- line winds called:

Correct AnswerverifiedShow Answer

Severe thunderstorm development occurs independently from the air flow aloft.

Correct AnswerverifiedShow Answer

How is global climate change expected to impact thunderstorm activity in the United States over the next century?

Correct AnswerverifiedShow Answer

Which association is incorrect?

Correct AnswerverifiedShow Answer

Which of the following statements is NOT true of tornadoes?

Correct AnswerverifiedShow Answer

The circulation in the immediate vicinity of a thunderstorm is:

Correct AnswerverifiedShow Answer

What is entrainment?

Correct AnswerverifiedShow Answer

A thunderstorm's direction of movement over the ground is determined by the gust front.

Correct AnswerverifiedShow Answer

Where in the thunderstorm would you be most likely to find mammatus clouds?

Correct AnswerverifiedShow Answer

About 50 percent of North American tornadoes are classified as violent (EF4- EF5).

Correct AnswerverifiedShow Answer

Why are air mass thunderstorms most likely to occur in the midafternoon?

Correct AnswerverifiedShow Answer

The anvil top of a thunderstorm often marks the beginning of the stratosphere.

Correct AnswerverifiedShow Answer

It is impossible to warn people of every lightning flash because:

Correct AnswerverifiedShow Answer

Which of the numbers listed below best represents the percentage of thunderstorms that produce tornadoes?

Correct AnswerverifiedShow Answer

The strongest tornados are ranked ________on the Enhanced Fujita Intensity Scale.

Correct AnswerverifiedShow Answer

About what percent of thunderstorms in the United States become severe?

Correct AnswerverifiedShow Answer

What makes the narrow, rotating air column or vortex of a tornado visible?

Correct AnswerverifiedEither the condensation of wat...View AnswerShow Answer

Which of the following U.S. states experiences the most thunderstorms each year?

Correct AnswerverifiedShow Answer

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Either the condensation of wat...
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