Choose the best answer.
 |
1 | |
How does a cumulonimbus cloud achieve charge separation? |
| | A) | Convective currents transport positive and negative ions through different sections of the cloud. |
| | B) | Differently charged precipitation particles are transported into different sections of the cloud. |
| | C) | Both a and b are valid. |
| | D) | The exact mechanism is as yet unknown. |
|
|
2 | |
Which of the following is not a requirement for thunderstorm development? |
| | A) | A sufficiently moist environment. |
| | B) | A sufficiently unstable environment. |
| | C) | Upward vertical motion. |
| | D) | Strong vertical wind shear. |
| | E) | All of these are necessary for thunderstorm development. |
|
|
3 | |
A hook echo on radar represents: |
| | A) | a definite tornado on the ground. |
| | B) | the mesocyclone within a supercell thunderstorm. |
| | C) | a wall cloud. |
| | D) | a bounded weak echo region. |
| | E) | All of the above. |
|
|
4 | |
Which of the following areas is most favored for waterspouts to occur? |
| | A) | Miami, Florida. |
| | B) | Omaha, Nebraska. |
| | C) | Rochester, New York. |
| | D) | Dallas, Texas. |
|
|
5 | |
Cars are often good protection from lightning. What makes them so? |
| | A) | The rubber in the tires and weatherstripping act as an insulator. |
| | B) | The steel skin of the body conducts the electricity away from the car's inhabitants. |
| | C) | The window glass acts as an insulator. |
| | D) | You can drive away from lightning. |
| | E) | All of the above are factors. |
|
|
6 | |
What differentiates a multicell thunderstorm from a supercell thunderstorm? |
| | A) | Supercells are longer lived than multicell complexes. |
| | B) | Supercells produce severe weather, while multicell thunderstorms do not. |
| | C) | Supercells are characterized by rotating updrafts. |
| | D) | Supercells only occur in the midwestern United States, while multicells occur in the northeastern U.S. |
|
|
7 | |
Which of the following is not a characteristic of lightning? |
| | A) | Lightning is a form of alternating current. |
| | B) | Lightning forms as a result of charge separation. |
| | C) | Lightning is a form of static electricity. |
| | D) | The visible flash of lightning typically travels from the ground to the cloud. |
| | E) | None of these is a characteristic of lightning. |
|
|
8 | |
The morning forecast for your area calls for hot, humid conditions during the afternoon, followed much cooler temperatures after the passage of a cold front. Which of the following would most likely be issued that morning for your area? |
| | A) | Severe thunderstorm watch. |
| | B) | Tornado watch. |
| | C) | Severe thunderstorm warning. |
| | D) | Tornado warning. |
| | E) | A and B. |
| | F) | C and D. |
|
|
9 | |
What differentiates air mass thunderstorms from severe thunderstorms? |
| | A) | Air mass thunderstorms occur in stable atmospheres. |
| | B) | Air mass thunderstorms feature tilted updrafts that are not affected by falling precipitation. |
| | C) | Strong vertical wind shear. |
| | D) | Severe thunderstorms do not last as long as air mass thunderstorms. |
| | E) | All of the above. |
|
|
10 | |
Which of the following conditions are favorable for the development of tornadic thunderstorms in a given area? |
| | A) | Fast winds that change direction sharply with height over the area of concern. |
| | B) | Warm, moist air in the lower troposphere. |
| | C) | A strong cold front approaching the area. |
| | D) | An inversion layer in the lower troposphere. |
| | E) | All of the above. |
| | F) | All of the above conditions occurring (more or less) simultaneously. |
|
|
11 | |
Which of the following statements is false? |
| | A) | The natural resistance of air to electricity allows lightning to form. |
| | B) | You do not have to be near a thunderstorm to be struck by lightning. |
| | C) | Lightning strikes are always fatal. |
| | D) | Lightning 'without' thunder (often called heat lightning) is lightning that is far enough from you that you do not hear the thunder. |
|
|
12 | |
Which of the following cities is the most climatologically favorable location for thunderstorms? |
| | A) | Oklahoma City, Oklahoma. |
| | B) | Albany, New York. |
| | C) | New Orleans, Louisiana. |
| | D) | Pueblo, Colorado. |
|
|
13 | |
Multicell thunderstorms owe their existence to: |
| | A) | the interaction of the large-scale environment with topographic features. |
| | B) | favorable large-scale environmental conditions for thunderstorms. |
| | C) | the interaction of individual storm's downdrafts and the environmental air forming new updrafts. |
| | D) | All of the above can lead to multicell thunderstorms. |
| | E) | Multicell thunderstorms form by none of these mechanisms. |
|
|
14 | |
The onset of precipitation marks the beginning of a thunderstorm's _______ stage. |
| | A) | cumulus |
| | B) | mature |
| | C) | dissipating |
| | D) | tornadic |
|
|
15 | |
Most tornadoes have wind speeds: |
| | A) | in excess of 276 kts. |
| | B) | between 113 and 179 kts. |
| | C) | less than 97 kts. |
| | D) | between 180 and 226 kts. |
|
2002 McGraw-Hill Higher Education