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University Of Arizona ATMO 170A Chapter 4 1)_____________occupy or cover approximately 70% of the earth’s surface a
University Of Arizona
ATMO 170A
Chapter 4
1)_____________occupy or cover approximately 70% of the earth’s surface
a. Forest
b. Cities
c. Oceans
d. Clouds
2. As the air temperature increases, the air’s capacity for water vapor .
a. Increases
b. Decreases
c. Remains constant
d. Can either increase or decrease because it is unrelated to air temperature
3. If very cold air is brought indoors and warmed with no change in its moisture content, the saturation vapor pressure of this air will and the relative humidity of this air will .
a. Increase, increase
b. Decrease, decrease
c. Increase, decrease
d. Decrease, increase
4. As the air temperature increases, with no addition of water vapor to the air, the dew point will .
a. Remain the same
b. Increase
c. Decrease
d. Become equal to the air temp
5. The temperature to which air must be cooled in order to become saturated in the .
a. Minimum temp
b. Dew point temp
c. Wet bulb temp
d. Freezing point
6. As the difference between the air temperature and the dew point increases, the relative humidity .
a. Increases
b. Decreases
c. Remains constant at a value less than 100%
d. Remains constant and equal to 100%
7. What is a measure of how cool skin can become, i.e., the lowest temp that can be reached by evaporating water into the air?
a. Dew point temp
b. Wet bulb temp
c. Dry bulb temp
d. Heat index
8. The Heat Index (HI) is based on the apparent temperature, which is a combination of air temperature and .
a. Wind speed
b. Relative humidity
c. Solar intensity
d. Cloud cover
9. If water vapor comprises 3.5% of an air parcel whose total pressure is 1000 mb, the water vapor pressure would be .
a. 1035 mb
b. 35 mb
c. 350 mb
d. 965 mb
10. The percentage of water vapor present in the air compared to that required for saturation is the .
a. Mixing ratio
b. Absolute humidity
c. Dew point
d. Relative humidity
11. Which of the following would cause relative humidity to decrease?
a. Cooling the air
b. Warming the air
c. Increasing the actual water vapor pressure
d. Decreasing the saturation water vapor pressure
12. When the air temperature increases, the saturation vapor pressure will
a. Increase
b. Decrease
c. Remain the same
d. Vary over an increasingly broad range of values
13. A golf ball will travel slightly farther on a day.
a. Cool, clear
b. Cool. Cloudy
c. Hot, dry
d. Hot, humid
14. Particles that serve as surfaces on which water vapor may condense are called .
a. Hydrophobic nuclei
b. Nacreous nuclei
c. Condensation nuclei
d. Scud
15. The production of dew is mainly the result of .
a. Conduction
b. Radiational cooling
c. Cooling due to the release of latent heat
d. Advection
16. Dew is most likely to for on .
a. Clear, calm nights
b. Cloudy, calm nights
c. Clear, windy nights
d. Cloudy, windy nights
17. Frost forms when
a. Conditions are cold, cloudy, and windy
b. The dew point is 32 degrees or below
c. The dew point is above 32 degrees
d. Dew freezes
18. Radiation fog forms when .
a. Air pressure at the ground drops suddenly
b. Air next to the ground is cooled
c. Water vapor is added to air next to the ground
d. There is an increase in condensation nuclei in air at the ground
19. On a cold, winter morning the most likely place for radiation fog to form is .
a. At the top of a hill or mountain
b. In a valley
c. Along the side of a hill
d. Over a body of water
20. A good example of is observed along the pacific coast during summer, when warm, moist air from the ocean is carried over colder coastal waters
a. Radiation fog
b. High fog
c. Advection fog
d. Evaporation fog
21. Exhaled breath from your mouth in cold weather produces .
a. Radiation fog
b. Frontal fog
c. Advection fog
d. Mixing fog
22. A warm rain falling through a layer of cold, moist air can produce .
a. Radiation fog
b. Frontal fog
c. Advection fog
d. Upslope fog
23. Which cloud is least likely to produce precipitation that reaches the ground
a. Stratus
b. Nimbostratus
c. Cumulonimbus
d. Cirrocumulus
24. A halo around the moon means that .
a. Cirrostratus clouds are present
b. The clouds overhead are low clouds
c. Rain is falling from the clouds overhead
d. The clouds are composed of water droplets
25. A dim, watery sun visible through a gray sheet like cloud layer is often a good indication of clouds.
a. Stratocumulus
b. Cirrostratus
c. Altostratus
d. Nimbostratus
26. Light or moderate continuous precipitation is most often associated with clouds
a. Nimbostratus
b. Cirrostratus
c. Cirrocumulus
d. Cumulonimbus
27. A low, lumpy cloud layer that appears in rows, patches or rounded masses would be classified .
a. nimbostratus
b. stratus
c. cumulus
d. stratocumulus
28. The name given to a towering cloud that produces precipitation that is showery with frequent changes in intensity is .
a. Cumulus humilis
b. Cumulus mediocris
c. Cumulonimbus
d. Altocumulus
29. An anvil-shaped top is most often associated with .
a. Cumulonimbus
b. Cumulus congestus
c. Altocumulus
d. Altocumulus
30. Hail is usually associated with what cloud
a. Cumulus
b. Stratocumulus
c. Altocumulus
d. Cumulonimbus
31. Clouds that appear as bag-like sacks hanging from beneath a cloud are .
a. Pileus
b. Lenticular
c. Mammatus
d. Castellanus
32. There are two primary types of weather satellites in use for viewing clouds. The first are geostationary satellites and the second are satellites
a. Equatorial
b. Polar orbiting
c. Geosynchronous
d. Visible cloud
33. The naming clouds, the term “status” or “strato” means .
a. Thick
b. Storm
c. Low altitude
d. Layer clouds
34. Cirrus clouds are composed primarily of .
a. Water droplets
b. Water vapor
c. Ice particles
d. Salt aerosols
35. Thin, wispy clouds blown by high winds into long streamers, called mare’s tails are .
a. Stratus
b. Cirrocumulus
c. Altostratus
d. Cirrus
36. When viewed from the surface, high clouds that are small founded white puffs occurring individually or in long rows are called .
a. Stratocumulus
b. Cirrostratus
c. Cirrocumulus
d. Cirrus
37. Which type of cloud shows the greatest verical growth?
a. Cumulus congestus
b. Cumulus humilis
c. Cumulonimbus
d. Cirrocumulus
38. Transpiration from plants and evaporation from soil, lakes, and streams account for a majority of the water vapor added to the atmosphere each year.
39. Hot air with a low relative humidity may actually contain more water vapor than cool air
with a high relative humidity.
40. The relative humidity is often near 100% in the Polar Regions.
41. Frost occurs when dew freezes.
42. Clouds can be accurately identified strictly on the basis of elevation.
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