CHAPTER 1

MONITORING THE WEATHER
__________________________________________________________

MULTIPLE CHOICE QUESTIONS

Title: TB Ch. 1 #1
1. __________ is defined as the state of the atmosphere at some place and time.
a. Climate
*b. Weather

Title: TB Ch. 1 #2
2. Climate is defined as weather conditions at some locality averaged over a standard period of _____ years.
a. 10
b. 20
*c. 30
d. 100

Title: TB Ch. 1 #3
3. The climate of some locality governs
a. the type of crops that can be cultivated.
b. the fresh water supply.
c. the average heating and cooling requirements for homes.
*d. All of the above are correct.

Title: TB Ch. 1 #4
4. Depending on local topography, the maximum range of broadcasts of the NOAA weather radio is about ____________ kilometers.
*a. 65	
b. 100
c. 20
d. 30

Title: TB Ch. 1 #5
5. ____________ is used to describe the weight of the overlying air. 
a. Relative humidity
b. Dewpoint
*c. Pressure
d. Temperature

Title: TB Ch. 1 #6
6. __________  pressure systems are usually accompanied by fair weather and __________ pressure systems are usually accompanied by stormy weather.
*a. High...............low
b. Low...............high

Title: TB Ch. 1 #7
7. ____________ is (are) typically found near the center of a high pressure system.
a. Strong winds
*b. Light winds or calm air 
c. Rainy weather
d. Lightning

Title: TB Ch. 1 #8
8. Viewed from above in the Northern Hemisphere, surface winds in a high pressure system blow
a. clockwise and inward.
*b. clockwise and outward.
c. counterclockwise and inward.
d. counterclockwise and outward.

Title: TB Ch. 1 #9
9. From your experience, weather systems usually cross the United States in
a. less than an hour.
*b. several days.
c. one to two months.
d. several years.

Title: TB Ch. 1 #10
10. Weather systems in the middle latitudes of the Earth generally move in the direction towards the
*a. east.	
b. south.
c. west.
d. north.

Title: TB Ch. 1 #11
11. Viewed from above in the Northern Hemisphere, surface winds blow ___________ about the center of a low pressure system.
a. clockwise and outward
b. clockwise and inward
c. counterclockwise and outward
*d. counterclockwise and inward

Title: TB Ch. 1 #12
12. Air temperatures tend to be relatively low to the ___________ of a low pressure system.
a. east and south
*b. north and west

Title: TB Ch. 1 #13
13. As a general rule, lows that track from west to east across southern Canada produce ___________ precipitation compared to lows that track along the Gulf of Mexico coast.
a. more
*b. less
c. about the same amount of

Title: TB Ch. 1 #14
14. An air mass is a huge volume of air that is relatively uniform horizontally in
a. temperature.
b. humidity.
*c. Both of the above are correct.

Title: TB Ch. 1 #15
15. A front is a narrow zone of transition between air masses that contrast in
a. temperature.
b. humidity.
*c. Either or both of the above are correct.

Title: TB Ch. 1 #16
16. The temperature and moisture characteristics of an air mass depend on
a. the phase of the Moon.
*b. the properties of the surface over which the air mass resides and travels.
c. conditions in the upper atmosphere.
d. None of the above is correct.

Title: TB Ch. 1 #17
17. Often associated with a front is (are)
a. cloudiness.
b. precipitation.
c. ascending air.
*d. All of the above are correct.

Title: TB Ch. 1 #18
18. __________ fronts are associated with cloudiness and precipitation over a broad band
a. Cold
*b. Warm

Title: TB Ch. 1 #19
19. At the same humidity (water vapor concentration), a cold air mass is _________ a warm air mass.
*a. denser than
b. less dense than
c. as dense as

Title: TB Ch. 1 #20
20. Most cloudiness and precipitation associated with a cold front occur as a relatively _________ band along or just ahead of where the front intersects Earth's surface.
*a. narrow
b. broad

Title: TB Ch. 1 #21
21. In North America, tornadoes are most common
a. along the U.S. East Coast.
b. along the U.S. Pacific Coast.
*c. in the central United States.
d. in Alaska.

Title: TB Ch. 1 #22
22. The winds in a _________ pressure system bring contrasting air masses together to form fronts.
*a. low
b. high

Title: TB Ch. 1 #23
23. A horizontal wind is named for the direction ___________ the wind blows.
a. toward which
*b. from which

Title: TB Ch. 1 #24
24. Typically, the day's ___________ temperature occurs around sunrise.
a. maximum
b. average
*c. minimum 

Title: TB Ch. 1 #25
25. Often the day's highest air temperature and lowest relative humidity occur
a. around midnight.
b. near Sunrise.
*c. during early to mid-afternoon.
d. None of the above is correct.

Title: TB Ch. 1 #26
26. On average, 10 cm of freshly fallen snow melt down to _____ cm of liquid water.
a. 5
b. 10
*c. 1.0
d. 0.1

Title: TB Ch. 1 #27
27. A northeast wind blows from the __________ toward the __________.
a. southwest. . . . . . .northwest
b. southeast. . . . . . .northeast
*c. northeast. . . . . . .southwest
d. west. . . . . . .east

Title: TB Ch. 1 #28
28. The National Weather Service issues a weather __________ when hazardous weather is imminent or actually taking place.
a. watch
*b. warning

Title: TB Ch. 1 #29
29. A geostationary satellite orbits Earth at a _________ altitude than a polar-orbiting satellite.
a. lower
*b. higher

Title: TB Ch. 1 #30
30. All other factors being equal, temperatures are _________ during clear nights.
*a. coldest
b. warmest

Title: TB Ch. 1 #31
31. All other factors being equal, an overcast sky _________ the day's maximum temperature.
*a. lowers
b. raises
c. has no effect upon

Title: TB Ch. 1 #32
32. An infrared satellite image is especially useful
a. during the day.
*b. at night.

Title: TB Ch. 1 #33
33. On an infrared satellite image, high clouds appear __________ low clouds.
*a. brighter than
b. darker than
c. the same as

Title: TB Ch. 1 #34
34. In the portion of the atmosphere where most clouds occur, the air temperature _________ with increasing altitude.
a. rises
*b. drops
c. is constant

Title: TB Ch. 1 #35
35. Clouds appear on __________ satellite images.
a. visible
b. infrared
c. water vapor
*d. All of the above are correct.

Title: TB Ch. 1 #36
36. Weather radar monitors the movement of
a. cloud particles.
*b. precipitation.

Title: TB Ch. 1 #37
37. Meteorologists monitor the movement of water vapor at higher altitudes of the atmosphere using
a. radar.
*b. water vapor satellite imagery.
c. infrared satellite imagery.

Title: TB Ch. 1 #38
38. On a water vapor satellite image, dry air is indicated by
*a. areas of black.
b. areas of gray.
c. areas of bright white.

Title: TB Ch. 1 #39
39. Weather radar emits pulses of __________ energy that are reflected by precipitation particles (e.g., raindrops, snowflakes).
a. radio
b. visible
c. infrared
*d. microwave

Title: TB Ch. 1 #40
40. Weather radar utilizes the _________ effect to monitor the motion of precipitation particles.
a. Coriolis
*b. Doppler
c. tornado
d. dewpoint

Title: TB Ch. 1 #41
41. A cloud in contact with the Earth's surface is known as
a. a cumuliform cloud.
*b. fog.
c. a cirrus cloud.
d. a thunderstorm.

Title: TB Ch. 1 #42
42. Wispy-appearing clouds that occur at high altitudes are composed of mostly
a. tiny liquid water droplets.
*b. tiny ice crystals.
c. methane.
d. solid carbon dioxide.

Title: TB Ch. 1 #43
43. __________ clouds occur at relatively high altitudes and have a fibrous or wispy appearance.
*a. Ice-crystal
b. Water-droplet

Title: TB Ch. 1 #44
44. Clouds that form horizontal layers are described as 
a. cumuliform.
b. fog.
*c. stratiform.
d. ice-crystal clouds.

Title: TB Ch. 1 #45
45. Cumuliform clouds _________ form along or ahead of a cold front.
a. never
*b. typically
c. always

Title: TB Ch. 1 #46
46. ___________ usually indicate fair weather.
*a. Scattered cumulus clouds
b. Stratiform clouds

Title: TB Ch. 1 #47
47. Cumulus clouds that exhibit essentially no vertical growth are ___________ to produce precipitation.
a. likely
*b. unlikely

Title: TB Ch. 1 #48
48. A thunderstorm cloud:
a. cumulus
b. cirrus
*c. cumulonimbus
d. stratiform

Title: TB Ch. 1 #49
49. __________ weather is usually associated with cumulonimbus clouds.
a. Fair
*b. Stormy

Title: TB Ch. 1 #50
50. Clouds located at different altitudes __________ move in the same direction indicating __________ in the horizontal wind direction with altitude.
a. always. . . . . . . a change
*b. sometimes. . . . . . . no change
c. sometimes. . . . . . . a change