Question 1

You should stay away from windows if you see an approaching tornado because

Accepted Answer

A)  flying debris is the primary cause of tornado injuries, and glass debris is particularly dangerous.
B)  opening the windows makes the house more susceptible to damage caused by the pressure differences associated with a tornado's passage.
C)  opening the windows would allow the extreme tornadic winds to push inward against the walls and collapse the building.
D)  keeping the windows closed is the best way to equalize the indoor and outdoor pressure during a tornado's passage.

Question 2

A thunderstorm becomes severe because

Accepted Answer

A)  inflow equals outflow.
B)  outflow equals inflow.
C)  the updraft and downdraft become quasi-steady state.
D)  entrainment enhances convection.

Question 3

"Tornado Alley"

Accepted Answer

A)  stretches from the southern Plains to the lower Great Lakes.
B)  is the nickname for the Storm Prediction Center in Norman, Oklahoma.
C)  is located in Florida.
D)  is a strip running from Kansas to western Pennsylvania.

Question 4

The pressure difference within a tornado can be as high as

Accepted Answer

A)  15 mb.
B)  30 mb.
C)  45 mb.
D)  100 mb.

Question 5

Cite two explanations for the apparent increase in the number of tornadoes in the United States since 1950.

Accepted Answer

(i) expansion of population in...

Question 6

During a lightning event

Accepted Answer

A)  a large quantity of electrons is transferred.
B)  there is typically only one stroke.
C)  the negative charge near the bottom of the cloud increases.
D)  the air around the conducting channel is heated to temperatures up to 30,000 K.

Question 7

When the area of rotation of a mesocyclone decreases in size,its wind speed ________.

Accepted Answer

The answer of When the area of rotation of a...

Question 8

If you are outside in the presence of lightning and cannot take cover indoors,which of the following would be the safest course of action?

Accepted Answer

A)  go to a low-lying area, crouch down and minimize your contact with the ground
B)  lie face down in a ditch
C)  seek shelter beneath a large tree
D)  climb into the open back of a pickup truck

Question 9

Airplanes are struck by lightning

Accepted Answer

A)  frequently.
B)  only during clear-sky flights.
C)  only during high altitude flights.
D)  only during takeoff and landing.

Question 10

On a hypothetical planet with physical and atmospheric characteristics similar to Earth,which location would be expected to have a higher incidence of tornadoes?

Accepted Answer

A)  a mountainous continent bordering a warm ocean covering a wide range of latitudes
B)  a flat continent bordering a cold ocean covering a wide range of latitudes
C)  a flat continent bordering a warm ocean covering a wide range of latitudes
D)  a mountainous continent bordering a cold ocean covering a wide range of latitudes

Question 11

Thunderstorms occur about how many times a day?

Accepted Answer

A)  5,000
B)  10,000
C)  40,000
D)  75,000

Question 12

In the United States,tornadoes are most likely to occur in this month:

Accepted Answer

A)  May.
B)  July.
C)  August.
D)  October.

Question 13

In order to determine how far lightning is from your observation point

Accepted Answer

A)  count the seconds from flash-to-bang and divide by ten.
B)  count the seconds from flash-to-bang and divide by five to get miles.
C)  listen to your AM radio and count the seconds from loud static to hearing the thunder and divide by ten.
D)  count the seconds from flash-to-bang and divide by 30.

Question 14

This country has more tornadoes than any other

Accepted Answer

A)  Australia.
B)  China.
C)  United States.
D)  Canada.

Question 15

The Enhanced Fujita scale

Accepted Answer

A)  classifies the greatest number of tornadoes as "weak."
B)  has ten categories.
C)  includes F6 tornadoes, which occur only a few times a year.
D)  classifies tornadoes by the width of their spouts.

Question 16

The three stages of the air mass thunderstorm are

Accepted Answer

A)  cumulus, mature, dissipating.
B)  cumulus, dissipating, mature.
C)  initial, mature, degenerating.
D)  initial, middle, dissipating.

Question 17

The safest place to be when a tornado strikes is ________.

Accepted Answer

in a well-constructe...

Question 18

Charge separation

Accepted Answer

A)  results in the top of the cloud having a negative charge.
B)  most often occurs in clouds that are not precipitating.
C)  results in lightning only if the cloud extends above the freezing level.
D)  is not explained by the thermoelectric effect.

Question 19

This phenomenon

Accepted Answer

A)  is typically larger than a tornado.
B)  usually forms over land and then moves over water.
C)  forms when a tornado sucks water from the ocean or lake.
D)  forms in conjunction with cumulus congestus clouds.

Question 20

Give two reasons why lightning kills fewer people now than in the past.

Accepted Answer

Any two of these:
(i) shifts in populati...

Exam 11: Lightning, thunder, and Tornadoes

When the area of rotation of a mesocyclone decreases in size,its wind speed ________.

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Charge separation

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This phenomenon

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During a lightning event

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Give two reasons why lightning kills fewer people now than in the past.

Correct AnswerverifiedAny two of these:(i) shifts in populati...View AnswerShow Answer

The three stages of the air mass thunderstorm are

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The Enhanced Fujita scale

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The pressure difference within a tornado can be as high as

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This country has more tornadoes than any other

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You should stay away from windows if you see an approaching tornado because

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The safest place to be when a tornado strikes is ________.

Correct Answerverifiedin a well-constructe...View AnswerShow Answer

On a hypothetical planet with physical and atmospheric characteristics similar to Earth,which location would be expected to have a higher incidence of tornadoes?

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Airplanes are struck by lightning

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Cite two explanations for the apparent increase in the number of tornadoes in the United States since 1950.

Correct Answerverified(i) expansion of population in...View AnswerShow Answer

"Tornado Alley"

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If you are outside in the presence of lightning and cannot take cover indoors,which of the following would be the safest course of action?

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In order to determine how far lightning is from your observation point

Correct AnswerverifiedShow Answer

Thunderstorms occur about how many times a day?

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A thunderstorm becomes severe because

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In the United States,tornadoes are most likely to occur in this month:

Correct AnswerverifiedShow Answer

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Any two of these:
(i) shifts in populati...
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in a well-constructe...
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(i) expansion of population in...
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