Salt Lake Community College – Meteorology 1010
Quiz #2
J. Allred, Adjunct
Student Name: ____________________
1. Which of the following atmospheric conditions probably contains the most latent heat:
a.
b.
c.
d.
e.
45° F and 65% humidity
60° F and 60% humidity
70° F and 55% humidity
90° F and 40% humidity
95° F and 55% humidity
2. A cubic foot of air at 10,000 feet can hold more energy than a cubic foot of air at sea level because it is closer to
the sun. In most cases, it actually does hold more energy as well.
True ___
False ___
3. A warm, sunny day is more likely than a rainy day to exhibit dangerous levels of Ozone air pollution.
True ___
False ___
4. Lifting a parcel of air to a higher altitude will tend to help it reach vapor saturation.
True ___
False ___
5. An ice cube in the freezer will slowly evaporate for two reasons:
- it is surrounded by very dry air that has un-used capacity for more vapor pressure
- cold air in the freeze still has enough heat to cause sublimation of ice directly to vapor.
True ___
False ___
6. A weather “inversion” will exhibit which of the following conditions:
a.
b.
c.
d.
e.
Unstable conditions that typically include colder air aloft and warmer air below
Stable conditions, with colder air aloft and warmer air below
Cloudy, stagnant and polluted air, sometimes with rain and low air pressure
Stable conditions that include relatively high air pressure and no precipitation
Unstable conditions, typically with rising air and precipitation.
7. A vapor-saturated parcel of air will tend to rise if it is surrounded by a region of dry air.
True ___
False ___
8. Wet air that is blowing up over a mountain will tend to precipitate because:
a.
b.
c.
d.
e.
Rising air pressure going up the mountain helps squeeze humidity out of the air
Air pressure is lower at higher elevations, causing temperatures to drop and saturation to occur
Wind helps evaporate air out of clouds, causing rain and snow
Snow caps near mountain tops encourage clouds to drop moisture by reflection off white surfaces
All of the above are true.
9. When clouds form, heat is released. When water freezes, heat is released.
True ___
False ___
10. Rain is more likely to occur after moist air flows over the top of mountains and cools and condenses on its way
down the other side.
True ___
False ___
11. A hot, sunny sky in Arizona may well contain more absolute humidity than a foggy, winter sky in Alaska.
True ___
False ___
12. To keep her orange grove from freezing, a Florida farmer will be encouraged to spray water on her trees.
True ____
False ____
13. On a 90°F day with extremely dry air, at what altitude above that place would you expect to find
atmospheric ice crystals?
a.
b.
c.
d.
e.
11,500 feet or higher
Between 17,500 feet and 19,500 feet
22,500 feet or higher
17,500 feet or higher
None of the above is a good estimate.
14. As temperatures rise during the day, absolute humidity will tend to go down.
True ___
False ___
15. The weight of water in a parcel of air is best considered a measure of:
a.
b.
c.
d.
e.
Absolute humidity
Relative humidity
The likelihood for rainfall to occur
Dew point
All of the above are true.