Wx 201 exam 2 - Study guides, Class notes & Summaries
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Weather Exam 2- WX 201 ERAU Questions and Answers
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Weather Exam 2- WX 201 ERAU Questions and Answers
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WX 201 Exam 2 with correct Answers (Graded A)
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WX 201 Exam 2
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WX 201 Exam 2 with correct Answers Graded A+
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WX 201 Exam 2 with correct Answers Graded A+ 
At what time of day is the relative humidity normally at a minimum? 
when the air temperature is highest 
 
 
The time of day when the relative humidity reaches a maximum value is usually 
at the time when the air temperature is lowest. 
 
 
The instrument that measures humidity by measuring the amount of radiant energy absorbed by water vapor is the 
infrared hygrometer. 
 
 
The relationship between the mass of water vapor in an air parcel and the ...
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WX 201 Exam 2 Questions With Solutions 100% Correct
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WX 201 Exam 2 Questions With Solutions 
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large raindrops fall _____ smaller raindrops; and have ______terminal velocity than/as small 
raindrops 
a. slower than; a greater 
b. faster than; a greater 
c. faster than; a lesser 
d. at the same rate as; the same 
e. slower than; a lesser B 
the most likely time for an ordinary thunderstorm to form is
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Weather Exam 2- WX 201 ERAU Questions and Answers
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Weather Exam 2- WX 201 ERAU Questions and Answers 
Radar Reflectivity 
The amount of energy received by the radar that is scattered back to it, usually by precipitation particles 
 
 
Attenuation 
Reduction of radar power by absorption of radiation by targets 
 
 
WSR-88D 
Weather Surveillance Radar 1988 Doppler 
 
 
dopplar radar 
specialized radar that can detect precipitation and movement of small particles and can approximate wind speed 
 
 
Aircraft Radar 
Low power(300-500w), 3cm wavelengt...
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WX 201 Exam 2 with correct Answers (Graded A)
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WX 201 Exam 2 with correct Answers (Graded A) 
Analysis Chart 
Depict actual data obtained at a given observation time 
 
 
Forecast Chart 
Computer model charts predicting future conditions of the atmosphere; surface charts and upper level charts are created 
 
 
Constant altitude charts 
All locations at the same altitude above ground level (for surface analysis, pressures are typically adjusted to MSL) 
 
 
Constant pressure charts 
all locations on the chart have the same pressure; contour l...
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WX 201 Exam 2 Questions With Solutions 100% Correct
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WX 201 Exam 2 Questions With Solutions 
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Dew is most likely to form on clear, calm nights 
Which two clouds can produce precipitation? cumulonimbus and nimbostratus 
If fog is forming in Denver, Colorado (located on the eastern side of the Rocky Mountains), and 
the wind is blowing from the east, then the fog is most likely upslope fog 
On a cold, winter morning, the most likely place for radiation fog to form is in a valley 
As Apollo 12 ascended into the atmosphere, the height o...
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WX 201 Exam 2 with correct Answers (Graded A)
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WX 201 Exam 2 with correct Answers (Graded A) 
Reflectivity 
 
 
attenutation 
absorption of radiation by targets 
 
 
WSR-88D 
Weather Surveillance Radar 1988 Doppler, detects precip and atmospheric movement 
 
 
Doppler 
ability to detect the "shift in the phase" of an energy pulse 
 
 
aircraft radar 
less precise than WSR-88D 
 
 
ground radar 
elevated to avoid terrain, raises elevation angle 1 degree every 360 degree scan, probably wont give you full picture of scan, cone of silence wher...
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WX 201 Exam 2 with correct Answers (Graded A)
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WX 201 Exam 2 with correct Answers (Graded A) 
An unsaturated air parcel cools or warms at what rate? 
Dry adiabatic lapse rate (DALR) 
 
 
A saturated air parcel cools or warms at which rate? 
Moist adiabatic rate (MALR) 
 
 
If the environmental lapse rate is greater than the dry adiabatic rate, the atmosphere is: 
Absolutely unstable 
 
 
Surface cooling and warm air advection aloft generally do what to the atmosphere? 
Make it more stable 
 
 
An air parcel starts to rise freely when it firs...
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WX 201 Exam 2 questions with solutions 100% correct
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WX 201 Exam 2 questions with solutions 100% 
correct 
At what time of day is the relative humidity normally at a minimum? when the air 
temperature is highest 
The time of day when the relative humidity reaches a maximum value is usually at the 
time when the air temperature is lowest. 
The instrument that measures humidity by measuring the amount of radiant energy absorbed by 
water vapor is the infrared hygrometer. 
The relationship between the mass of water vapor in an air parcel and the ...
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