ATMO 170A1 Section 3, Spring 2012 - Zeng

ATMO 170A1 Section 3, Spring 2012 - Zeng

Homework Assignment #11

Due before midnight on Tuesday 5/1/2012 via http://d2l.arizona.edu (click on quizzes)

Choose the right (one) answer for each question

1. Over the tropics, what is used in the weather map to represent the wind field?

(a) pressure, (b) height, (c) streamlines

2. The eye of a hurricane is characterized by

(a) precipitation, (b) downward motion, (c) upward motion

3. What condition is NOT favorable for the hurricane formation?

(a) high sea surface temperature, (b) high wind, (c) high humidity, (d) existence of convergence

4. If a hurricane is moving westward at 10 knots in the Northern Hemisphere, which side will the strongest wind be located?

(a) eastern side, (b) western side, (c) northern side, (d) southern side

5. Based on Table 11.2, what is the category of Hurricane Elena in Fig. 11.2?

(a) category 2, (b) category 3, (c) category 4, (d) category 5.

6. Hurricanes can't form along the equator because

(a) there isn't much water along the equator, it's mostly land, (b) the Coriolis force is too small along the equator, (c) there are no feedback mechanisms along the equator, (d) it's too humid for the ocean water to evaporate

7. Under a strong trade wind inversion,

(a) a hurricane is difficult to form, (b) a hurricane is easy to form, (c) the formation of hurricane is not affected

8. The term “storm surge” refers to

(a) the leading edge of a hurricane, (b) a higher-than-average incidence of tropical storm occurrence, (c) a rise in ocean level of several meters or more, (d) the increasing speed of a hurricane as it moves in the middle latitudes.

9. Which of the following areas in the United States would most likely experience thunderstorms, hurricanes and tornadoes during the course of one year?

(a) Pacific Coast states, (b) New England states, (c) Great Plains states, (d) Gulf Coast states

10. A tropical storm becomes a hurricane when

(a) the winds exceed 64 knots, (b) a clear eye becomes visible on a satellite photograph, (c) the central pressure drops below 950 mb, (d) it reaches Category 3 on the Saffir-Simpson scale.

11. The main difference between a hurricane and a tropical storm is that

(a) hurricanes are larger, (b) tropical storms are more than 500 miles from the US mainland, (c) winds speeds are greater in a hurricane.

12. In the Northern Hemisphere, hurricanes and middle latitude cyclones are similar in that both

(a) have surface weather fronts, (b) intensify with increasing height above the ground, (c) have winds that blow counterclockwise around their centers, (d) will generally move from west to east.