Quiz Ste
This is an "open book" quiz. You may refer to the text in this chapter. A good score is 8 correct. Answers are in the back of the book.
1. A looping-path tornado is especially dangerous because
(a) it contains higher winds than other types of tornadoes.
(b) it is larger in diameter than other types of tornadoes.
(c) it contains multiple mesocyclones.
(d) it can strike a specific point more than once.
2. The winds in tornadoes can blow at speeds of up to about
3. Suction vortices in a tornado system
(a) produce strong straight-line winds.
(b) are accompanied by powerful downdrafts.
(c) always rotate in an anticyclonic sense.
(d) can cause strange and extreme damage.
4. Suppose you are building a new home. The home is to be rectangular in shape, with floors measuring 10 m by 20 m. After consulting the historical records, you determine that the mean azimuth (compass bearing) from which tornadoes have approached in the past 100 years is due west. In order to make the home as tornado-resistant as possible, the 20-m-wide outside walls should face toward the
(b) north and south.
(c) northwest and southeast.
(d) northeast and southwest.
5. If a tornado approaches from the south, the most dangerous (that is, the least safe) side of the building in which to take cover is the
6. If the main vortex of a tornado rotates at 120 kt, there are secondary vortices rotating at 40 kt, there are suction vortices rotating at 50 kt, and the whole system is moving at 20 kt with respect to the surface from the southwest towards the northeast, the highest winds blow from
(a) the southwest.
(b) the northwest.
(c) the northeast.
(d) all directions equally.
7. If the main vortex of a tornado rotates at 120 kt, there are secondary vortices rotating at 40 kt, there are suction vortices rotating at 50 kt, and the whole system is moving at 20 kt, with respect to the surface from the southwest towards the northeast, the highest winds blow at
8. An approaching tornado can often, but not always, be detected by
(a) the image of a mesocyclone on a radar set.
(b) the brightening of a television screen tuned to a vacant channel.
(c) a noise that sounds like a passing freight train.
(d) Any of the above
9. On a spring or summer day in an American Midwestern location, you should be aware of a greater-than-normal chance for tornadoes to occur if
(a) the barometer is falling and the wind is blowing from the south or southeast.
(b) severe thunderstorms appear to be developing.
(c) a severe thunderstorm watch has been issued.
(d) Any of the above
10. A tornado warning will be issued when
(a) conditions are favorable for tornado development.
(b) a funnel cloud has been sighted.
(c) a severe thunderstorm is approaching.
(d) the barometer is falling.
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