Exercises Chapter 22 (Part 2) PSC1515
1. What are the three motions of air that ultimately result in wind?
a._________________________
b._________________________
c._________________________
2. Which has lower pressure, the warmer air or the colder air?__________
3. The movement of air as a result of warm air and cool air is called
The ______________movement of air.
4. On a coastal area, during the day the wind blows from the ___________to
(ocean, land)
the ______________. During the night the wind blows from the_________
(ocean, land)
(ocean, land)
to the ______________.
(ocean, land)
5. Warm air rises at the __________________ then drops back down at
latitudes ________ and _________ . This causes winds which are called
______________ and ________________.
6. When the maximum amount of water vapor is present in the atmosphere at
a certain temperature, then the air is said to be _________________ with
water vapor. When this happens, the rates of _________________ and
__________________ of water vapor are the same. If the temperature is
decreased, we will have ________________water vapor present in the air.
(more, less)
7. Match the following:
a. relative humidity
___ the most water vapor that air can hold.
b. maximum humidity
___ the actual humidity that is present in the
air.
c. absolute humidity
___ the percentage water vapor in the air.
8. What are three factors that are necessary in order for rain (precipitation) to
occur?
a.______________________________
b.______________________________
c.______________________________
9. What are three things that can serve as condensation nuclei?
a._________________
b._________________
c._________________
10. If the temperature drops water vapor can condense as ___________ at
intermediate temperatures, or as _____________ at lower temperatures on the ground.
Answers:
1. a. Upward movement of warm air
b. Horizontal movement of air
c. Downward movement of cold air
2. The warmer air. 3. convective 4. ocean to land, land to ocean
5. equator, 30oN and 30oS, westerlies and trade winds.
6. saturated, condensation and evaporation, less.
7. b, a, c
8. The air must be saturated, the temperature must decrease (cooling),
condensation nuclei must be present.
9. salt crystals, aerosols such as dust or soot. 10. dew, frost.