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Here are some of the questions for the commercial weather segment.
1. A square inch column of air at sea level weighs. Select one:
A. Approximately 15 lbs/ sq inch.
B. Approximately 14.7 lbs/sq inch.
C. Approximately 14.5 lbs/sq inch.
D. Approximately 11.7 lbs/ sq inch.
2. At 20,000 FT, a column of air weighs. Select one:
A. 9.67 lbs/ sq inch
B. 7.65 lbs/ sq inch
C. 6.75 lbs/ sq inch
D. 5.75 lbs/ sq inch
What is the top layer of the troposphere known as. Select one:
A. The thermopause.
B. The mesosphere.
C. The thermosphere.
D. The tropopause.
Why does most of the "weather" occur in the troposphere. Select one:
A. Its due to the presence of water vapour.
B. It is typically associated with a steep inversion.
C. Its due to coriolis force.
D. Its due to the significant change in the pressure gradient force.
The type of cloud that forms on top of a mountain in the wave crest and lies in bands that extend more than 40,000 feet are called. Select one:
A. Lenticular clouds.
B. Lens clouds.
C. Rotor clouds.
D. Mountain wave clouds.
If you encounter warmer air on top of colder air the meteorology term to describe this is
What best describes the reason for Lake Effect Snow. Select one:
A. Cold air passing over a relatively warm body of water. It picks up the heat and moisture from the water and is forced to drop the moisture in the form of snow as it reaches the downwind shore.
B. Extremely cold air passing over a cool water surface, because the cool water is warmer than the very cold air over the water it creates precipitation. It typically only releases the precipitation as snow on the upwind shore.
C. Extremely warm air over a relatively warm to cool body of water. As the air passes over the cool body of water it forces the extraction of moisture from the water and releases it as snow on the upwind shore.
D. Warm air passing over a large cold body of water which saturates the air. The air continues to move and loses its ability to retain moisture, so it starts to snow.
TAFs normally provide forecast conditions. Select one:
A. Of wind, visibility, weather and cloud heights above sea level that relate to flight operations within 10NM of an aerodrome runway complex.
B. Of wind, visibility, weather and cloud heights above ground that relate to flight operations within 5NM of an aerodrome runway complex.
C. That may result in IFR ceilings and visibilities within a 25NM radius of a given airport.
D. Expected to occur below FL240 over a given area along with the most probable time of occurrence.
An upper level wind coded as 848960 means. Select one:
A. The wind is 240 degrees true at 89 knots and the temperature is minus 60.
B. The wind is 240 degrees magnetic at 189 knots and the temperature is minus 60.
C. The wind is 340 degrees true at 189 knots and the temperature is minus 60.
D. The wind is 340 degrees magnetic at 89 knots and the temperature is minus 60.
How often are GFA charts issued per day. Select one:
A. Twice daily.
B. Four times per day.
C. Three times per day.
D. Six times per day.