Department of Geography and Environmental Systems
UNIVERSITY OF MARYLAND BALTIMORE COUNTY
GES-311
Weather and Climate
Please use the answer sheet. Each has 2.5
points.
1) If an air parcel of 3 m3 at 16 C
undergoes compressional warming, the final volume can be …………. m3
and final temperature can be ……….. C.
a) 3.3, 15
b) 2.9, 17
c) 3.3, 17
d) 2.9, 15
2) Consider an unsaturated air parcel that is lifted
adiabatically, the temperature will be ………….
˚C at 1500 m if the initial temperature is 20 C at the surface.
a) 10
b) 8
c) 5
d) 12
3) ………… hold more water than ……… among four reservoirs.
a) Atmosphere, ground water
b) Ground water, ice caps
c) Ice caps, atmosphere
d) Ground water, ocean
4) The average distance of the Earth and sun is ……..
meters.
a) 147 x 106
b) 150 x 109
c) 153 x 106
d) 156 x 109
5) If the mixing ratio is 10.02 g/kg, the specific
humidity can be ….. g/kg.
a) 10.0
b) 9.4
c) 8.6
d) 7.9
6) The dew point temperature can be ……….. C if the wet-bulb
temperature is -23 C .
a) -18
b) -20
c) -22
d) -24
7) If the vapor pressure is 5 mb, and the relative
humidity is 50%, the saturation vapor pressure is …… millibars.
a) 5
b) 10
c) 20
d) 40
8) 240 calorie of heat is required to melt ……… gram
of ice at 0˚C.
a) 1
b) 2
c) 3
d) 4
9) Arctic sea smoke results from ............... fog.
a) steam
b) radiation
c) advection
d) upslope
10) A rotating beam ceilometer detected a cloud base
as 400 m at 45 angle with respect to the horizon. What is the distance between the light
detector and the ceilometer?
(tan45 = 1, cos45 = 0.707, sin45 = 0.707)
a) 283 meter
b) 200 meter
c) 375 meter
d) 400 meter
11) ……….…. calories of heat are released during
condensation of 3 gram of water vapor at 100˚C.
a) 1620
b) 600
c) 1080
d) 540
12) 66.55˚ South is also known as ………..
a) Tropic of Capricorn
b) Tropic of Cancer
c) Arctic Circle
d) Antarctic Circle
13) 20 calories of heat are needed to raise the
temperature of 2 gram of ice from …..˚C to -5˚C.
a) -35
b) -25
c) -20
d) -15
14) If a saturated air parcel is lifted 500 m from a
level where the temperature is -7 C, the parcel’s final temperature will be …….
C
a) -4
b) -13
c) -1
d) -10
15) The temperature lags the solar cycle by an
average of ….. days in US.
a) 18
b) 27
c) 41
d) 53
16) …… is used in radiosondes.
a) Dew cell
b) Optical hygrometer
c) Dew point hygrometer
d) Electrical capacity hygrometer
17) ……… fog is responsible for the fog over the
mountain terrain.
a) upslope
b) advection
c) steam
d) radiation
18) The maximum difference in length of the day is ……
hours in Baltimore.
a) 5.0
b) 5.5
c) 6.0
d) 6.5
19) The solar constant is minimum on ……..
a) January 3
b) April 4
c) July 4
d) October 5
20) Stratus is mostly composed of ...............
a) dust particles
b) water droplets
c) supercooled water droplets
d) ice crystals
21) ………. measures the total shortwave radiation.
a) Thermometer
b) Hygrometer
c) Celiometer
d) Pyranometer
22) …………. does not measure the temperature directly.
a) Liquid-in-thermometer
b) Radiometer
c) Thermistor thermometer
d) Electrical resistance thermometer
23) A thermometer is reliable if the accuracy is
within ± ….. C.
a) 0.3
b) 0.6
c) 0.9
d) 1.2
a) haze
b) smoke
c) mist
d) fog
25) A large
raindrop is …… mm in diameter.
a) 0.5
b) 1
c) 3
d) 5
26) Anvil cloud is associated with ……. cloud.
a) cumulonimbus
b) cirrocumulus
c) altocumulus
d) stratocumulus
27) Under normal conditions, the water vapor pressure
is ………… millibars.
a) 40
b) 20
c) 5
d) 10
28) Psychrometer consists of two …….. thermometer
a) alcohol
b) mercury
c) carbonate
d) ethanol
29) Nacreous clouds occur in the upper ………
a) troposphere
b) stratosphere
c) mesosphere
d) thermosphere
30) …......... measures the continuous trace of
relative humidity.
a) Barograph
b) Hygrograph
c) Thermograph
d) Anemograph
31) If the wet-bulb depression is 10 C, and the
temperature is 30 C, the wet-bulb temperature is ….… C.
a) 30
b) 50
c) 40
d) 20
32) If the saturation vapor pressure with respect to water
is 1.05 mb, the saturation vapor pressure with respect to ice is ….. mb at the
same temperature.
a) 1.14
b) 1.07
c) 0.95
d) 1.21
33) Heat index above 125 ˚F is related to ……….
condition.
a) caution
b) extreme caution
c) danger
d) extreme danger
34) The dew point temperature is about …… ˚F in
Baltimore, MD in July.
a) 55
b) 62
c) 68
d) 75
35) …….. is used to distinguish the precipitation
phase.
a) frost-point temperature
b) air temperature
c) dew-point temperature
d) wet-bulb temperature
36) ……. clouds
produce halo around the sun/moon.
a) Cirrocumulus
b) Altocumulus
c) Cirrostratus
d) Altostratus
37) The seasonal temperature contrast is minimum in
……...
a) St. Louis, Missouri
b) Baltimore, Maryland
c) San Diego, California
d) Denver, Colorado
38) Ice fog is a type of ………... fog.
a) radiation
b) advection
c) upslope
d) steam
39) 60 calories of heat are needed during warming 2
gram of water from 30˚C to …. ˚C
a) 50
b) 60
c) 40
d) 30
40) What is the speed of a pilot balloon that enters
a cloud in 2 minutes when ceiling is 600 m.
a) 50 m/min
b) 100 m/min
c) 200 m/min
d) 300 m/min
Department of Geography and Environmental Systems
UNIVERSITY OF MARYLAND BALTIMORE COUNTY
GES-311
Weather and Climate
Name:
Please fill the blank. Each has 2.5
points. Please use the diagram on the other side of the page.
41) ______________________________ clouds produce
light to moderate rain.
42) _______________________ states that the total
pressure of a mixture of gases equals to the sum of the pressure exerted by
each constituent of gas.
43) Evapotranspiration is ________________ +
_______________________________.
44) LCL stands for
_____________________________________________________.
45) ____________________ conditions exist when the
relative humidity reaches 100%.
46) On average, Baltimore, MD has _________ foggy
days per year.
47) _____________________ is formed by mixing of hot
and humid exhaust and dry and cold ambient air.
48) On average, the residence time of a water
molecule is about __________ days.
49) Plot the isobars and identify low and high
pressure centers. 10 points