Question 1

After a tornado is spotted:

Accepted Answer

A) a tornado watch is issued. 
B) its direction of movement is carefully monitored by aircraft. 
C) a tornado warning is issued. 
D) hail begins to fall from the cloud. 
E) attempts may be made to change its direction of movement. 
A) a tornado watch is issued. 
B) its direction of movement is carefully monitored by aircraft. 
C) a tornado warning is issued. 
D) hail begins to fall from the cloud. 
E) attempts may be made to change its direction of movement.

Question 2

Multi-vortex tornadoes can be created in the laboratory,but they don't exist in nature.

Accepted Answer

A) True 
 B)False

Question 3

About equal numbers of clockwise- and counterclockwise-rotating tornadoes are observed in the United States every year.

Accepted Answer

A) True 
 B)False

Question 4

Weak tornadoes sometimes form along a thunderstorm gust front.

Accepted Answer

A) True 
 B)False

Question 5

Compare some damaging straight-line winds with tornado winds.Which do you think are more destructive? Why?

Accepted Answer

Damaging straight-line winds and tornado

Question 6

____________ measures the speed at which precipitation is moving toward or away from an observer.

Accepted Answer

A) A radiosonde 
B) An anemometer 
C) A psychrometer 
D) Doppler radar 
A) A radiosonde 
B) An anemometer 
C) A psychrometer 
D) Doppler radar

Question 7

Why do tornadoes move from the southwest toward the northeast?

Accepted Answer

Tornadoes often move from the southwest

Question 8

Why do tornadoes have low pressure cores?

Accepted Answer

Tornadoes have low-pressure cores due to

Question 9

The signal detected by a Doppler radar is:

Accepted Answer

A) a radiowave emitted by lightning. 
B) a soundwave produced by thunder. 
C) a radiowave reflected by precipitation. 
D) a soundwave produced by wind shear. 
A) a radiowave emitted by lightning. 
B) a soundwave produced by thunder. 
C) a radiowave reflected by precipitation. 
D) a soundwave produced by wind shear.

Question 10

Why is wind shear important in tornado formation?

Accepted Answer

Wind shear is a crucial factor in tornad

Question 11

The "Tornado Alley" region of the United States is located

Accepted Answer

A) in Florida. 
B) in the Central Plains. 
C) in the Ohio Valley. 
D) in the mid-Atlantic states. 
E) along the Gulf Coast. 
A) in Florida. 
B) in the Central Plains. 
C) in the Ohio Valley. 
D) in the mid-Atlantic states. 
E) along the Gulf Coast.

Question 12

Even if distinctive features that might indicate a tornado are observed on radar,a tornado must be observed visually before a tornado warning is issued.

Accepted Answer

A) True 
 B)False

Question 13

Tornadoes are most likely to form in a conditionally unstable atmosphere with weak vertical wind shear.

Accepted Answer

A) True 
 B)False

Question 14

Most waterspouts:

Accepted Answer

A) form in severe thunderstorms. 
B) draw water up into their core. 
C) have rotating winds of less than 45 knots. 
D) form in an area where winds are descending from a cloud. 
E) actually form over land. 
A) form in severe thunderstorms. 
B) draw water up into their core. 
C) have rotating winds of less than 45 knots. 
D) form in an area where winds are descending from a cloud. 
E) actually form over land.

Question 15

Most tornadoes last only a few minutes;some tornadoes have existed for several hours.

Accepted Answer

A) True 
 B)False

Question 16

In the United States,tornadoes are most frequent during the __________,and least frequent during the __________.

Accepted Answer

A) summer,fall 
B) spring,winter 
C) spring,fall 
D) summer,winter 
E) winter,fall 
A) summer,fall 
B) spring,winter 
C) spring,fall 
D) summer,winter 
E) winter,fall

Question 17

A hook echo on a radar screen often indicates:

Accepted Answer

A) a thunderstorm with very frequent lightning. 
B) a developing hurricane. 
C) the possible presence of a tornado-producing thunderstorm. 
D) a rotating anvil cloud at the top of a thunderstorm. 
A) a thunderstorm with very frequent lightning. 
B) a developing hurricane. 
C) the possible presence of a tornado-producing thunderstorm. 
D) a rotating anvil cloud at the top of a thunderstorm.

Question 18

Warm,humid air spins when drawn into a supercell thunderstorm.

Accepted Answer

A) True 
 B)False

Question 19

Most tornadoes move from:

Accepted Answer

A) northwest to southwest. 
B) southwest to northeast. 
C) south to north. 
D) southeast to northwest. 
A) northwest to southwest. 
B) southwest to northeast. 
C) south to north. 
D) southeast to northwest.

Question 20

Which of the following factors is most important in determining the strength of a tornado?

Accepted Answer

A) diameter 
B) air temperature 
C) duration 
D) central pressure 
A) diameter 
B) air temperature 
C) duration 
D) central pressure

After a tornado is spotted:

Multi-vortex tornadoes can be created in the laboratory,but they don't exist in nature.

About equal numbers of clockwise- and counterclockwise-rotating tornadoes are observed in the United States every year.

Weak tornadoes sometimes form along a thunderstorm gust front.

Compare some damaging straight-line winds with tornado winds.Which do you think are more destructive? Why?

____________ measures the speed at which precipitation is moving toward or away from an observer.

Why do tornadoes move from the southwest toward the northeast?

Why do tornadoes have low pressure cores?

The signal detected by a Doppler radar is:

Why is wind shear important in tornado formation?

The "Tornado Alley" region of the United States is located

Even if distinctive features that might indicate a tornado are observed on radar,a tornado must be observed visually before a tornado warning is issued.

Tornadoes are most likely to form in a conditionally unstable atmosphere with weak vertical wind shear.

Most waterspouts:

Most tornadoes last only a few minutes;some tornadoes have existed for several hours.

In the United States,tornadoes are most frequent during the ,and least frequent during the .

A hook echo on a radar screen often indicates:

Warm,humid air spins when drawn into a supercell thunderstorm.

Most tornadoes move from:

Which of the following factors is most important in determining the strength of a tornado?

The Turbulent Atmosphere

Energy That Drives the Storms

Temperature and Humidity Extremes

Condensation in the Atmosphere

Clouds and Stability

Precipitation Extremes

Atmospheric Motions

Wind Systems

Air Masses and Fronts

Mid-Latitude Cyclonic Storms

Thunderstorms

Hurricanes

Weather Forecasting

The Earths Changing Climate

Filters

Exam 12: Tornadoes

After a tornado is spotted:

Multi-vortex tornadoes can be created in the laboratory,but they don't exist in nature.

About equal numbers of clockwise- and counterclockwise-rotating tornadoes are observed in the United States every year.

Weak tornadoes sometimes form along a thunderstorm gust front.

Compare some damaging straight-line winds with tornado winds.Which do you think are more destructive? Why?

____________ measures the speed at which precipitation is moving toward or away from an observer.

Why do tornadoes move from the southwest toward the northeast?

Why do tornadoes have low pressure cores?

The signal detected by a Doppler radar is:

Why is wind shear important in tornado formation?

The "Tornado Alley" region of the United States is located

Even if distinctive features that might indicate a tornado are observed on radar,a tornado must be observed visually before a tornado warning is issued.

Tornadoes are most likely to form in a conditionally unstable atmosphere with weak vertical wind shear.

Most waterspouts:

Most tornadoes last only a few minutes;some tornadoes have existed for several hours.

In the United States,tornadoes are most frequent during the __________,and least frequent during the __________.

A hook echo on a radar screen often indicates:

Warm,humid air spins when drawn into a supercell thunderstorm.

Most tornadoes move from:

Which of the following factors is most important in determining the strength of a tornado?

The Turbulent Atmosphere

Energy That Drives the Storms

Temperature and Humidity Extremes

Condensation in the Atmosphere

Clouds and Stability

Precipitation Extremes

Atmospheric Motions

Wind Systems

Air Masses and Fronts

Mid-Latitude Cyclonic Storms

Thunderstorms

Hurricanes

Weather Forecasting

The Earths Changing Climate

Filters

In the United States,tornadoes are most frequent during the ,and least frequent during the .