Question

1. Which of the following are necessary conditions for thunderstorm development?

     _______a. moisture in the air

     _______b. instability

     _______c. a lifting process

     _______d. (all of the above)

2. Rapid precipitation growth starts to take place in thunderstorm cell during which stage of evolution?

     _______a. cumulus or developing

     _______b. mature

     _______c. dissipating

     _______d. (any of the above)

3. A long narrow band of closely spaced thunderstorm cells is called a

     _______a. supercell.

     _______b. mesoscale convective system.

     _______c. squall line.

     _______d. Texas brawl.

4. Which type of thunderstorm generally produces the strongest tornadoes?

     _______a. multicell thunderstorm complex

     _______b. air mass thunderstorm

     _______c. supercell

     _______d. squall line thunderstorm

5. The rotating updraft of a mesocyclone is the result of

     _______a. twisting and turning.

     _______b. bobbing and weaving.

     _______c. tilting and stretching.

     _______d. shaking and baking.

6. For supercell formation, you need

     _______a. warm moist air near the surface.

     _______b. a lower tropospheric southerly flow with strong vertical wind shear.

     _______c. an unstable atmosphere.

     _______d. (all of the above)

7. Which region of the continental United States experiences the most days with large

    hail per year?

     _______a. the Great Plains.

     _______b. central Florida.

     _______c. the Pacific Northwest.

     _______d. New England.

    

8. Which of the following statements is false?

     _______a. Tornadoes form only in thunderstorms.

     _______b. Tornadoes form only in supercell thunderstorms.

     _______c. Tornadoes come in varying sizes and shapes.

     _______d. The strongest tornadoes are comparatively rare.

9. The season of maximum tornado frequency in the continental United States is

     _______a. winter.

     _______b. spring.

     _______c. summer.

     _______d. fall.

10. The only hazard usually associated with most air mass thunderstorms is

     _______a. large hail.

     _______b. hurricane force downburst winds.

     _______c. strong tornadoes.

     _______d. lightning.

11. The diameter of the largest tornado ever recorded was around

      _______a. 500 feet.

      _______b. 1,000 feet.

      _______c. one-half mile.

      _______d. two and one-half miles.

12. The majority of U.S. tornadoes move in which direction?

      _______a. toward the northeast

      _______b. toward the south

      _______c. toward the west

      _______d. toward the northwest

Answer 1

Ans.

Ans 1.

Three most important things needed for a thunderstorm are rising medium, instability and moisture hence the correct option is (D) i.e. all of the above.

Ans 2.

It mainly occurs in cumulus stage when the air continuously rises and gets cooled and condensed. Hence the correct option is (A)

Ans 3.

It is called squall line

Ans 4.

Supercell thunderstorms produce the strongest tornadoes

Ans 5.

It is due to twisting and turning

Ans 6.

The correct option is (d) i.e. all of the above since all of them are important in generating a supercell tornado

Ans 7.

Hail alley is the region where Colorado, Nebraska and Wyoming meet and see the maximum hail. All these states are included in great plains of US and thus the correct option is (A)

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