Question 1

In the United States,tornadoes are ranked in terms of wind speed and related property damage using the ________ scale.

Accepted Answer

A) Beaufort 
B) Enhanced Fujita 
C) Mercalli 
D) Richter 
E) Saffir-Simpson 
A) Beaufort 
B) Enhanced Fujita 
C) Mercalli 
D) Richter 
E) Saffir-Simpson B

Question 2

Which of the following matches is true?

Accepted Answer

A) specific humidity of 17 g/kg = typical moisture content of mT Gulf air mass 
B) very cold,dry,and stable air mass = mT Pacific air mass 
C) warm,humid,very unstable air mass = mT Pacific air mass 
D) Tropical air mass source region = 40° to 55° N or S 
E) cA air mass = very cold and very moist 
A) specific humidity of 17 g/kg = typical moisture content of mT Gulf air mass 
B) very cold,dry,and stable air mass = mT Pacific air mass 
C) warm,humid,very unstable air mass = mT Pacific air mass 
D) Tropical air mass source region = 40° to 55° N or S 
E) cA air mass = very cold and very moist A

Question 3

Why are the winds in a hurricane and tornado so strong?

Accepted Answer

A) the pressure gradient is weak. 
B) the pressure at the center of the storm is very low. 
C) tremendous amounts of evaporation occur in the center of the storm. 
D) friction in the air is minimal. 
E) Coriolis makes them spin quickly. 
A) the pressure gradient is weak. 
B) the pressure at the center of the storm is very low. 
C) tremendous amounts of evaporation occur in the center of the storm. 
D) friction in the air is minimal. 
E) Coriolis makes them spin quickly. B

Question 4

After  a warm front passes,the temperature ________ and the pressure ________ (relative to the conditions that existed prior to the passage of the front).

Accepted Answer

A) increases increases 
B) increases decreases 
C) decreases increases 
D) decreases decreases 
A) increases increases 
B) increases decreases 
C) decreases increases 
D) decreases decreases

Question 5

A line on a weather map that is marked with small triangular spikes designates a warm front.

Accepted Answer

A) True 
 B)False

Question 6

Warmer-than-average surface water temperatures between Africa and the Caribbean are associated with a greater frequency of Atlantic hurricanes.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following pressure systems reside within the source region for mP air masses?

Accepted Answer

A) Bermuda high and Pacific high 
B) Aleutian low and Icelandic low 
C) Bermuda high and Icelandic low 
D) Aleutian low and Pacific high 
E) ITCZ 
A) Bermuda high and Pacific high 
B) Aleutian low and Icelandic low 
C) Bermuda high and Icelandic low 
D) Aleutian low and Pacific high 
E) ITCZ

Question 8

Orographic precipitation is limited in areal extent,yet it produces the world's highest precipitation amounts and averages.

Accepted Answer

A) True 
 B)False

Question 9

In terms of stability,mT air masses formed over the Gulf of Mexico are quite similar to the mT air masses formed over the Pacific.

Accepted Answer

A) True 
 B)False

Question 10

The topography and latitudinal position of North America are important factors in air mass interactions.

Accepted Answer

A) True 
 B)False

Question 11

Describe the typical life cycle of a mid-latitude cyclone in North America,beginning with cyclogenesis and ending with the cyclone's dissolution.

Accepted Answer

The answer of Describe the typical life cycle of a...

Question 12

Which of the following is correct?

Accepted Answer

A) the most severe weather in a hurricane occurs in the spiral bands. 
B) by definition,hurricanes have sustained winds that exceed 65 knots (119 km?h?¹). 
C) mature hurricanes develop a central eye of stormy conditions (in which it is often possible to see the sky)that is surrounded by a swirling eyewall. 
D) only about 35 percent of tropical disturbances intensify into a full-fledged hurricane or typhoon. 
E) hurricanes never move over central Canada. 
A) the most severe weather in a hurricane occurs in the spiral bands. 
B) by definition,hurricanes have sustained winds that exceed 65 knots (119 km?h?¹). 
C) mature hurricanes develop a central eye of stormy conditions (in which it is often possible to see the sky)that is surrounded by a swirling eyewall. 
D) only about 35 percent of tropical disturbances intensify into a full-fledged hurricane or typhoon. 
E) hurricanes never move over central Canada.

Question 13

The wide end of a flat island in the tropics is likely to experience more rainfall than the narrow end because

Accepted Answer

A) more orographic uplift occurs over the wide end. 
B) more convectional heating occurs over the wide end. 
C) less advection occurs over the wide end. 
D) different air masses affect each end of the island. 
E) it is farther from the water. 
A) more orographic uplift occurs over the wide end. 
B) more convectional heating occurs over the wide end. 
C) less advection occurs over the wide end. 
D) different air masses affect each end of the island. 
E) it is farther from the water.

Question 14

Which of the following is true?

Accepted Answer

A) lightning follows thunder. 
B) thunder is caused by rapid heating and expansion of the air. 
C) thunder is caused by rapid contraction of the air. 
D) because lightning is only static electricity,it poses no threat to human safety. 
E) lightning shifts are completely random and cannot be correlated with seasonal shifts of the Sun's declination. 
A) lightning follows thunder. 
B) thunder is caused by rapid heating and expansion of the air. 
C) thunder is caused by rapid contraction of the air. 
D) because lightning is only static electricity,it poses no threat to human safety. 
E) lightning shifts are completely random and cannot be correlated with seasonal shifts of the Sun's declination.

Question 15

The wetter,intercepting slope of a mountain is termed the ________ slope,whereas the drier,downwind slope is termed the ________ slope.

Accepted Answer

A) left side right side 
B) west side east side 
C) windward leeward 
D) leeward windward 
E) north side south side 
A) left side right side 
B) west side east side 
C) windward leeward 
D) leeward windward 
E) north side south side

Question 16

Heavy rains in west Africa,as well as warm sea temperatures in the Atlantic Ocean between Africa and the Caribbean,are some of the indicators of an up-coming,active hurricane season.

Accepted Answer

A) True 
 B)False

Question 17

Scientists have essentially ruled out global climate change as a cause of increased tornado frequency in North America.

Accepted Answer

A) True 
 B)False

Question 18

The severity of storm activity along a cold front is ________ than that along most warm fronts because the rate of uplift is ________ along a cold front.

Accepted Answer

A) less slower 
B) less faster 
C) greater slower 
D) greater faster 
A) less slower 
B) less faster 
C) greater slower 
D) greater faster

Question 19

Which of the following is true regarding thunderstorms?

Accepted Answer

A) In North America the least thunderstorms occur in areas dominated by mT air masses. 
B) The largest authenticated hailstone weighed 75.8 g. 
C) In the North America,the area with the highest number of thunderstorms per year has the highest average number of tornadoes per year. 
D) The temperature inside a bolt of lightning can reach 300 degrees C. 
E) Kampala,Uganda,is the place with the most thunderstorms per year (242)and it sits virtually on the equator. 
A) In North America the least thunderstorms occur in areas dominated by mT air masses. 
B) The largest authenticated hailstone weighed 75.8 g. 
C) In the North America,the area with the highest number of thunderstorms per year has the highest average number of tornadoes per year. 
D) The temperature inside a bolt of lightning can reach 300 degrees C. 
E) Kampala,Uganda,is the place with the most thunderstorms per year (242)and it sits virtually on the equator.

Question 20

Weather forecasting accuracy has improved due to

Accepted Answer

A) advancements in weather modeling,including 2-D models. 
B) advancements in computer technology,including the High Performance Computing System. 
C) the use of radar to analyze temperatures from the surface to high altitudes. 
D) an increased density in sampling and monitoring stations across all of North America. 
E) Despite improvements in technology,weather forecasts have not improved. 
A) advancements in weather modeling,including 2-D models. 
B) advancements in computer technology,including the High Performance Computing System. 
C) the use of radar to analyze temperatures from the surface to high altitudes. 
D) an increased density in sampling and monitoring stations across all of North America. 
E) Despite improvements in technology,weather forecasts have not improved.

Exam 8: Weather

In the United States,tornadoes are ranked in terms of wind speed and related property damage using the ________ scale.

Which of the following matches is true?

Why are the winds in a hurricane and tornado so strong?

After a warm front passes,the temperature ________ and the pressure ________ (relative to the conditions that existed prior to the passage of the front).

A line on a weather map that is marked with small triangular spikes designates a warm front.

Warmer-than-average surface water temperatures between Africa and the Caribbean are associated with a greater frequency of Atlantic hurricanes.

Which of the following pressure systems reside within the source region for mP air masses?

Orographic precipitation is limited in areal extent,yet it produces the world's highest precipitation amounts and averages.

In terms of stability,mT air masses formed over the Gulf of Mexico are quite similar to the mT air masses formed over the Pacific.

The topography and latitudinal position of North America are important factors in air mass interactions.

Describe the typical life cycle of a mid-latitude cyclone in North America,beginning with cyclogenesis and ending with the cyclone's dissolution.

Which of the following is correct?

The wide end of a flat island in the tropics is likely to experience more rainfall than the narrow end because

Which of the following is true?

The wetter,intercepting slope of a mountain is termed the ________ slope,whereas the drier,downwind slope is termed the ________ slope.

Heavy rains in west Africa,as well as warm sea temperatures in the Atlantic Ocean between Africa and the Caribbean,are some of the indicators of an up-coming,active hurricane season.

Scientists have essentially ruled out global climate change as a cause of increased tornado frequency in North America.

The severity of storm activity along a cold front is ________ than that along most warm fronts because the rate of uplift is ________ along a cold front.

Which of the following is true regarding thunderstorms?

Weather forecasting accuracy has improved due to

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After a warm front passes,the temperature and the pressure (relative to the conditions that existed prior to the passage of the front).

The wetter,intercepting slope of a mountain is termed the slope,whereas the drier,downwind slope is termed the slope.

The severity of storm activity along a cold front is than that along most warm fronts because the rate of uplift is along a cold front.