Question 1

Ordinary thunderstorms only last about one hour and begin to dissipate when ____.

Accepted Answer

A)  lightning neutralizes all the electrical charge in the cloud
B)  when all the precipitation particles in the cloud turn to ice
C)  when the downdraft spreads throughout the cloud and cuts off the updraft
D)  when solar heating at the ground begins to decrease
E)  when clouds scatter due to the microbursts within the storm systemF) None of the above
G) A) and E)

Question 2

Thunderstorms that produce tornadoes ____.

Accepted Answer

A)  have very little cloud-to-ground lightning
B)  have updraft velocities that exceed 100 miles per hour
C)  have rotating updrafts
D)  will not produce hail
E)  do not existF) A) and E)
G) B) and E)

Question 3

A cloud-to-ground lightning discharge will sometimes appear to flicker. This is because ________.

Accepted Answer

A)  you are able to see charges
B)  you are barely able to distinguish separate return strokes
C)  the bright light causes you to blink
D)  of refraction caused by turbulent thunderstorm winds
E)  your eyes momentarily get blinded by lightningF) A) and E)
G) A) and B)

Question 4

Left-moving supercell thunderstorms are uncommon in the Northern Hemisphere, yet are very common in the Southern Hemisphere.

Accepted Answer

A) True 
 B)False

Question 5

Large hail is more common in Kansas than in Florida.

Accepted Answer

A) True 
 B)False

Question 6

____________________ is a discharge of electricity, a giant spark, which usually occurs in mature thunderstorms.

Accepted Answer

The answer of ____________________ is a discharge of electricity, a...

Question 7

Lightning may occur from one cloud to another.

Accepted Answer

A) True 
 B)False

Question 8

The most likely time for an ordinary thunderstorm to form is ____.

Accepted Answer

A)  just after sunrise
B)  just before sunrise
C)  around midnight
D)  late afternoon
E)  at noonF) All of the above
G) A) and B)

Question 9

Lightning can travel in a number of directions, but it cannot travel from one cloud to another cloud.

Accepted Answer

A) True 
 B)False

Question 10

Scattered thunderstorms (sometimes called "pop-up" or "popcorn" storms)that typically form on warm, humid days are often referred to as ____________________ thunderstorms or ____________________ thunderstorms.

Accepted Answer

air-mass; ordinary c...

Question 11

Scientists understand with certainty how clouds are electrified.

Accepted Answer

A) True 
 B)False

Question 12

When a dart leader moving toward the ground deviates from the original path taken by the stepped leader, the lightning appears crooked. Lightning that takes on this shape is called ____ lightning.

Accepted Answer

A)  ribbon
B)  forked
C)  crooked
D)  bead
E)  ballF) A) and B)
G) B) and C)

Question 13

Thunderstorms are most common in the Great Plains states.

Accepted Answer

A) True 
 B)False

Question 14

The upper part of a thunderstorm cloud is normally ____ charged, and the middle and lower parts are ____.

Accepted Answer

A)  negatively; neutral
B)  negatively; positive
C)  positively; positive
D)  positively; negative
E)  positively; neutralF) A) and C)
G) B) and D)

Question 15

Squall-line thunderstorms generally form _____.

Accepted Answer

A)  along or ahead of a cold front
B)  with a strong wave cyclone
C)  behind a cold front
D)  ahead of a warm front
E)  along an occluded frontF) A) and E)
G) None of the above

Question 16

A continuous supply of sparks, or a corona discharge, sent into the air above an object is better known as _________________.

Accepted Answer

The answer of A continuous supply of sparks, or a...

Question 17

Electrons ____.

Accepted Answer

A)  are negatively charged
B)  are positively charged
C)  carry no charge
D)  can carry either positive or negative charge
E)  go back and forth between positive, negative, and neutralF) B) and C)
G) A) and C)

Question 18

Lightning can shoot from the top of thunderstorms into the upper atmosphere.

Accepted Answer

A) True 
 B)False

Question 19

An important principle in one of the theories of the electrification of clouds is that ____.

Accepted Answer

A)  there is a net transfer of negative ions from a warmer object to a colder object
B)  supercooled water is always negatively charged
C)  ice crystals are always negatively charged
D)  there is a net transfer of positive ions from a warmer object to a colder object
E)  raindrops are always positively chargedF) A) and C)
G) B) and D)

Question 20

The lightning stroke can heat the air through which it travels to an incredible 30,000 degrees Celsius (54,000 degrees Fahrenheit) , which is ____ times hotter than the surface of the Sun.

Accepted Answer

A)  2
B)  3
C)  4
D)  5
E)  6F) B) and E)
G) B) and D)

Exam 14: Thunderstorms

An important principle in one of the theories of the electrification of clouds is that ____.

Correct AnswerverifiedShow Answer

Lightning can shoot from the top of thunderstorms into the upper atmosphere.

Correct AnswerverifiedShow Answer

Scattered thunderstorms (sometimes called "pop-up" or "popcorn" storms)that typically form on warm, humid days are often referred to as ____________________ thunderstorms or ____________________ thunderstorms.

Correct Answerverifiedair-mass; ordinary c...View AnswerShow Answer

Scientists understand with certainty how clouds are electrified.

Correct AnswerverifiedShow Answer

Left-moving supercell thunderstorms are uncommon in the Northern Hemisphere, yet are very common in the Southern Hemisphere.

Correct AnswerverifiedShow Answer

The upper part of a thunderstorm cloud is normally ____ charged, and the middle and lower parts are ____.

Correct AnswerverifiedShow Answer

Thunderstorms that produce tornadoes ____.

Correct AnswerverifiedShow Answer

The lightning stroke can heat the air through which it travels to an incredible 30,000 degrees Celsius (54,000 degrees Fahrenheit) , which is ____ times hotter than the surface of the Sun.

Correct AnswerverifiedShow Answer

When a dart leader moving toward the ground deviates from the original path taken by the stepped leader, the lightning appears crooked. Lightning that takes on this shape is called ____ lightning.

Correct AnswerverifiedShow Answer

Squall-line thunderstorms generally form _____.

Correct AnswerverifiedShow Answer

Ordinary thunderstorms only last about one hour and begin to dissipate when ____.

Correct AnswerverifiedShow Answer

Thunderstorms are most common in the Great Plains states.

Correct AnswerverifiedShow Answer

Lightning may occur from one cloud to another.

Correct AnswerverifiedShow Answer

A cloud-to-ground lightning discharge will sometimes appear to flicker. This is because ________.

Correct AnswerverifiedShow Answer

Electrons ____.

Correct AnswerverifiedShow Answer

The most likely time for an ordinary thunderstorm to form is ____.

Correct AnswerverifiedShow Answer

____________________ is a discharge of electricity, a giant spark, which usually occurs in mature thunderstorms.

Correct AnswerverifiedShow Answer

A continuous supply of sparks, or a corona discharge, sent into the air above an object is better known as _________________.

Correct AnswerverifiedShow Answer

Lightning can travel in a number of directions, but it cannot travel from one cloud to another cloud.

Correct AnswerverifiedShow Answer

Large hail is more common in Kansas than in Florida.

Correct AnswerverifiedShow Answer

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Scattered thunderstorms (sometimes called "pop-up" or "popcorn" storms)that typically form on warm, humid days are often referred to as thunderstorms or thunderstorms.

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air-mass; ordinary c...
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The upper part of a thunderstorm cloud is normally charged, and the middle and lower parts are .

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