Question 1

Shelf clouds are also called ____ clouds.​

Accepted Answer

A)   ​arcus
B)   ​cucmulus
C)   ​comma
D)   ​omega
E)   ​stratusF) C) and D)
G) A) and B)

Question 2

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) C) and D)
G) B) and C)

Question 3

During the summer, what conditions prevail near the surface over the Great Plains that help a hailstone survive as ice all the way to the ground?​

Accepted Answer

A)   ​strong updrafts
B)   ​weak updraftsdry air
C)   ​dry air
D)   ​a rapid change in pressure
E)   ​a rapid change in temperatureF) D) and E)
G) A) and C)

Question 4

Thunder is caused by​

Accepted Answer

A)   ​the collision between two thunderstorms with opposite electrical charge.
B)   ​the rapid heating of air surrounding a lightning channel.
C)   ​the explosion that occurs when + and - charge collide and neutralize each other.
D)   ​turbulent wind motions inside the thunderstorm.
E)   ​microbursts within the atmosphere.F) A) and B)
G) C) and D)

Question 5

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

​ordinary cell; air-...

Question 6

Lightning may occur from one cloud to another.​

Accepted Answer

A) True 
 B)False  True

Question 7

To be rated a severe thunderstorm by the National Weather Service, the storm has to have at least one of the following: large hail with a diameter of at least three-quarters of an inch, surface wind gusts of 40 knots or greater, or produces a tornado.​

Accepted Answer

A) True 
 B)False

Question 8

____ lightning looks like a luminous sphere, often about the size of a football, that appears to float in the air or slowly dart about for several seconds​

Accepted Answer

A)   ​Ball
B)   ​Bead
C)   ​Ribbon
D)   ​Forked
E)   ​St. Elmo'sF) B) and D)
G) A) and B)

Question 9

The wind shear associated with several major airline crashes is believed to have been caused by​

Accepted Answer

A)   ​microbursts.
B)   ​dry lines.
C)   ​the jet stream.
D)   ​mesocyclones.
E)   ​the jet streak.F) C) and D)
G) A) and E)

Question 10

When damage associated with straight-line winds extends for several hundred kilometers along the path of a squall line, the storm is called a(n) ____________________.

Accepted Answer

The answer of When damage associated with straight-line winds extends...

Question 11

Describe the relationship between flooding and thunderstorms.​

Accepted Answer

Intense thunderstorms can be associated ...

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

Positive lightning is the most common with ____ thunderstorms.​

Accepted Answer

A)   ​ordinary cell
B)   ​squall-line
C)   ​multicell
D)   ​supercell
E)   ​mesoscale convective complexF) A) and D)
G) A) and C)

Question 14

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 15

In what region in the United States do dryline thunderstorms most frequently form?

Accepted Answer

A)   ​Washington, Oregon
B)   ​Colorado, Utah, New Mexico
C)   ​Pennsylvania, Maryland, Delaware
D)   ​Texas, Kansas, Oklahoma
E)   ​Tennessee, LouisianaF) A) and E)
G) C) and E)

Question 16

When a thunderstorm is located on the high plains east of the Rocky Mountains, a much larger portion of the storm will typically be located above the freezing level, so hail has a better chance of occurring.

Accepted Answer

A) True 
 B)False

Question 17

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)   ​ball​F) C) and E)
G) C) and D) B

Question 18

Sound travels ____________________ in warm air than in cold air.​

Accepted Answer

The answer of Sound travels ____________________ in warm air than...

Question 19

Downdrafts tend to dominate during the ____ stage.​

Accepted Answer

A)   ​cumulus
B)   ​dissipating
C)   ​precipitating
D)   ​developing
E)   ​growthF) A) and E)
G) B) and D)

Question 20

Thunderstorms may form along or just east of a boundary called a(n) ____________________, which represents a narrow zone where there is a sharp horizontal change in moisture.

Accepted Answer

dryline
dry line

Exam 14: Thunderstorms

Shelf clouds are also called ____ clouds.​

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

During the summer, what conditions prevail near the surface over the Great Plains that help a hailstone survive as ice all the way to the ground?​

Correct AnswerverifiedShow Answer

Thunder is caused by​

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 Answerverified​ordinary cell; air-...View AnswerShow Answer

Lightning may occur from one cloud to another.​

Correct AnswerverifiedTrue

To be rated a severe thunderstorm by the National Weather Service, the storm has to have at least one of the following: large hail with a diameter of at least three-quarters of an inch, surface wind gusts of 40 knots or greater, or produces a tornado.​

Correct AnswerverifiedShow Answer

____ lightning looks like a luminous sphere, often about the size of a football, that appears to float in the air or slowly dart about for several seconds​

Correct AnswerverifiedShow Answer

The wind shear associated with several major airline crashes is believed to have been caused by​

Correct AnswerverifiedShow Answer

When damage associated with straight-line winds extends for several hundred kilometers along the path of a squall line, the storm is called a(n) ____________________.

Correct AnswerverifiedShow Answer

Describe the relationship between flooding and thunderstorms.​

Correct AnswerverifiedIntense thunderstorms can be associated ...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Positive lightning is the most common with ____ thunderstorms.​

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In what region in the United States do dryline thunderstorms most frequently form?

Correct AnswerverifiedShow Answer

When a thunderstorm is located on the high plains east of the Rocky Mountains, a much larger portion of the storm will typically be located above the freezing level, so hail has a better chance of occurring.

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 AnswerverifiedB

Sound travels ____________________ in warm air than in cold air.​

Correct AnswerverifiedShow Answer

Downdrafts tend to dominate during the ____ stage.​

Correct AnswerverifiedShow Answer

Thunderstorms may form along or just east of a boundary called a(n) ____________________, which represents a narrow zone where there is a sharp horizontal change in moisture.

Correct Answerverifieddryline dry line

Shelf clouds are also called ____ clouds.

Correct Answer
verified

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

Correct Answer
verified

During the summer, what conditions prevail near the surface over the Great Plains that help a hailstone survive as ice all the way to the ground?

Correct Answer
verified

Thunder is caused by

Correct Answer
verified

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 Answer
verified
ordinary cell; air-...
View Answer

Lightning may occur from one cloud to another.

Correct Answer
verified
True

To be rated a severe thunderstorm by the National Weather Service, the storm has to have at least one of the following: large hail with a diameter of at least three-quarters of an inch, surface wind gusts of 40 knots or greater, or produces a tornado.

Correct Answer
verified

____ lightning looks like a luminous sphere, often about the size of a football, that appears to float in the air or slowly dart about for several seconds

Correct Answer
verified

The wind shear associated with several major airline crashes is believed to have been caused by

Correct Answer
verified

Correct Answer
verified

Describe the relationship between flooding and thunderstorms.

Correct Answer
verified
Intense thunderstorms can be associated ...
View Answer

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

Correct Answer
verified

Positive lightning is the most common with ____ thunderstorms.

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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 Answer
verified
B

Sound travels ____________________ in warm air than in cold air.

Correct Answer
verified

Downdrafts tend to dominate during the ____ stage.

Correct Answer
verified

Correct Answer
verified
dryline dry line