ATSC 110 Meteorology Final Exam Questions with All Correct Answers
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Course
ATSC 110 Meteorology
Institution
ATSC 110 Meteorology
ATSC 110 Meteorology Final Exam Questions with All Correct Answers
Describe how the process of collision-and- coalescence produces precipitation. - Answer- 1) Cloud droplets are of varying sizes within the cloud mass because of the varying strengths of the updrafts within the cloud, 2) Coalescenc...
ATSC 110 Meteorology Final Exam
Questions with All Correct
Answers
Describe how the process of collision-and- coalescence produces precipitation. -
Answer- 1) Cloud droplets are of varying sizes within the cloud mass because of the
varying strengths of the updrafts within the cloud, 2) Coalescences occurs between the
cloud droplets when the larger cloud droplets fall and collide with smaller droplets, 3)
The drops will eventually grow to a size that overcomes the upward vertical velocity
within the cloud enabling the drops to fall to the surface.
Explain how the Bergeron process 'Ice Crystal Process' increases the size of ice
crystals? - Answer- Ice crystals grow larger at the expense of the surrounding water
droplets since the saturated vapor pressure over ice is less than that over water at the
same subfreezing temperature. The water vapor molecules will diffuse towards the ice
crystal causing the ice crystal to grow while the super-cooled liquid water droplet will
decrease in size due to evaporation since the water droplet must replace the water
vapor molecules that it lost to the ice crystal.
What conditions are most favorable for the occurrence of aircraft icing? - Answer-
Aircraft icing occurs when an aircraft is flying through clouds that contain a significant
amount of super-cooled liquid water droplets. The best aircraft icing conditions occur
when the cloud temperature ranges from 0 to -10ºC. At these temperatures a lot of
super-cooled liquid water can be present within the cloud because of a lack of active ice
nuclei at these temperatures
Glaze Ice - Answer- large super-cooled liquid drops strike the aircraft and spread out
before freezing. The solid sheet of ice that forms is smooth and transparent. Glaze ice
can build up quickly, is heavy, and difficult to remove, even with modern de-icers.
Rime Ice - Answer- small super-cooled liquid droplets. These droplets will freeze before
they have time to spread out, leaving a rough and brittle coating of ice on the wing and
other exposed parts of the aircraft. Rime ice usually appears white since air is trapped
between the frozen droplets. Thou lighter than glaze ice, rime icing will redistribute the
air flow over the wing more than glaze icing will.
Constant Height Chart - Answer- Differences in pressure
, Constant Pressure Chart - Answer- Differences in height
Ridge - Answer- High pressure, Warm Air, Clockwise (Anticyclonic)
Horizontal Movement of Air - Answer- Pressure Gradient Force
Coriolis Force
Centripetal Force
Friction
Zonal Flow - Answer- is mainly a west to east flow pattern with the movement of the
wind fairly parallel to the west - east lines of latitude.
Meridional Flow - Answer- is mainly orientated north to south with large meanders
located within the flow pattern. This type of flow is mainly aligned with the north - south
lines of longitude (meridians).
Wind Shear - Answer- Sudden change in wind speed or direction
Sea Breeze - Answer- Leading edge of cooler air advancing across the land
Land Breeze - Answer- Leading edge of cooler air advancing out to sea
What is a "monsoon"? - Answer- is a wind that changes direction seasonally
Where is the best know monsoon in the world? - Answer- India
Does any location in the U.S. experience a monsoon? - Answer- southwestern desert
region of the U.S. does have a rainy spell in the late summer and early fall that is
associated with southerly winds off of the waters surrounding Baja, California .
Katabatic Wind - Answer- Cold down sloping
Chinook Wind - Answer- Warm down sloping
Santa Ana Wind - Answer- Affects SoCal, warm and dry
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