WX301 Exam 3 UPDATED ACTUAL Exam
Questions and CORRECT Answers
Cumulonimbus clouds appear _____ on visible satellite imagery and ________ on infrared
satellite imagery - CORRECT ANSWER - bright; bright
Who issues Convective SIGMETs? - CORRECT ANSWER - Aviation Weather Center
Who issues Storm watches and warnings? - CORRECT ANSWER - Storm Prediction Center
What is the critical thickness rule of thumb? - CORRECT ANSWER - 5400m
Cirrus clouds appear _____ on visible imagery and ______ on infrared satellite imagery. -
CORRECT ANSWER - dark; bright
Where is the heaviest snowfall most likely to occur near a surface cyclone? - CORRECT
ANSWER - To the Northwest of the Low
Most lightning strikes are located near a storm's region of strongest _______ - CORRECT
ANSWER - updrafts
Greatest thunderstorm potential would yield - CORRECT ANSWER - High CAPE, Negative
LI, and High KI
Stratus clouds or altostratus clouds are likely to occur where the visible imagery is ______ and
infrared imagery is _______ - CORRECT ANSWER - bright; dark
________ satellite imagery shows reflected sunlight - CORRECT ANSWER - Visible
, What does VCP mean? - CORRECT ANSWER - Volume Coverage Pattern
What is a VCP? - CORRECT ANSWER - A setting for the radar scanner. A number in the 30s
indicates clear air mode
What is a radar mosaic? - CORRECT ANSWER - A combination of individual radar sites'
readings
What is the difference between clear air mode and precipitation mode for a radar scanner? -
CORRECT ANSWER - Clear air mode has less frequent updates and detects small returns
while precipitation mode has more frequent updates but may miss small amounts of precipitation
Type I fluid is used for _______ and is ________ in color. - CORRECT ANSWER - de-ice;
red/orange
Type IV fluid is used for _______ and is ________ in color. - CORRECT ANSWER - anti-
ice; green
Moderate snowfall is considered to have a visibility between ____ SM and ______ SM -
CORRECT ANSWER - 1/4; 1/2
Does snowfall intensity solely determine icing risk? - CORRECT ANSWER - No
The greatest icing threat occurs between _____ degrees C and _____ degrees C. - CORRECT
ANSWER - 0; -20
What determines icing severity for the aircraft's wing? - CORRECT ANSWER - Wing
geometry, Aircraft Speed, Aircraft Surface Temperature, Exposure Time, Liquid Water Content,
Air Temperature, Droplet size (smaller drops flow around the wing more often than bigger
drops), and Updraft presence
Questions and CORRECT Answers
Cumulonimbus clouds appear _____ on visible satellite imagery and ________ on infrared
satellite imagery - CORRECT ANSWER - bright; bright
Who issues Convective SIGMETs? - CORRECT ANSWER - Aviation Weather Center
Who issues Storm watches and warnings? - CORRECT ANSWER - Storm Prediction Center
What is the critical thickness rule of thumb? - CORRECT ANSWER - 5400m
Cirrus clouds appear _____ on visible imagery and ______ on infrared satellite imagery. -
CORRECT ANSWER - dark; bright
Where is the heaviest snowfall most likely to occur near a surface cyclone? - CORRECT
ANSWER - To the Northwest of the Low
Most lightning strikes are located near a storm's region of strongest _______ - CORRECT
ANSWER - updrafts
Greatest thunderstorm potential would yield - CORRECT ANSWER - High CAPE, Negative
LI, and High KI
Stratus clouds or altostratus clouds are likely to occur where the visible imagery is ______ and
infrared imagery is _______ - CORRECT ANSWER - bright; dark
________ satellite imagery shows reflected sunlight - CORRECT ANSWER - Visible
, What does VCP mean? - CORRECT ANSWER - Volume Coverage Pattern
What is a VCP? - CORRECT ANSWER - A setting for the radar scanner. A number in the 30s
indicates clear air mode
What is a radar mosaic? - CORRECT ANSWER - A combination of individual radar sites'
readings
What is the difference between clear air mode and precipitation mode for a radar scanner? -
CORRECT ANSWER - Clear air mode has less frequent updates and detects small returns
while precipitation mode has more frequent updates but may miss small amounts of precipitation
Type I fluid is used for _______ and is ________ in color. - CORRECT ANSWER - de-ice;
red/orange
Type IV fluid is used for _______ and is ________ in color. - CORRECT ANSWER - anti-
ice; green
Moderate snowfall is considered to have a visibility between ____ SM and ______ SM -
CORRECT ANSWER - 1/4; 1/2
Does snowfall intensity solely determine icing risk? - CORRECT ANSWER - No
The greatest icing threat occurs between _____ degrees C and _____ degrees C. - CORRECT
ANSWER - 0; -20
What determines icing severity for the aircraft's wing? - CORRECT ANSWER - Wing
geometry, Aircraft Speed, Aircraft Surface Temperature, Exposure Time, Liquid Water Content,
Air Temperature, Droplet size (smaller drops flow around the wing more often than bigger
drops), and Updraft presence
