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Meteorology - ATPL - Airline Transport Pilot Licence

Test 10 domande Meteorology, tempo libero

1 - An aircraft is flying through the polar front jet stream from south to north, beneath the core. How would the OAT change, in the northern hemisphere, during this portion of the flight? It decreases. It remains constant. It first increases, then decreases. It increases.

2 - A sample of moist but unsaturated air may become saturated by Expanding it adiabatically Compressing it adiabatically Lowering the pressure, keeping temperature constant Raising the temperature

3 - If the QFE, QNH and QFF of an airport have the same value, The airport must be at MSL The 1013.25 hPa level must be at MSL The airport must be at MSL and the conditions must be as in the ISA The conditions must be as in the ISA

4 - About ten identical clouds are in the sky, well isolated from one another, dense, with well defined contours, developing vertically in a cauliflower shape. The side of these clouds lit by the sun is bright white. Their base, relatively dark, is essentially horizontal and at FL 30, and their tops at FL 150. These clouds are Broken Cumulus humilis Towering Cumulus Stratocumulus Altocumulus castellanus

5 - Which form of precipitation from clouds containing only water is most likely to fall in mid- latitudes? Moderate rain with large drops Drizzle Hail Heavy rain with large drops

6 - During a cross-country flight at FL 50, you observe the following sequence of clouds: Nimbostratus, Altostratus, Cirrostratus, Cirrus.Which of the following are you most likely to encounter ? Strong, gusty winds. A strong downdraught. Decreasing temperatures. Increasing temperatures.

7 - The following temperatures have been observed over a station at 1200 UTC. Assume the station is at MSL. Height in feet. Temperature in degrees C.20000.-12 18000.-11 16000.-10 14000.-10 12000.-6 10000.-2 8000. +2 6000. +6 4000. +122000. +15 surface+15.Which of the following statements is correct ? The height of the freezing level over the station is approximately 12000 FT. Assuming that the MSL pressure is 1013.25 hPa the true altitude of an aircraft would actually be higher than the indicated altitude. Assume the station is at MSL. Height in feet. Temperature in degrees 20000.-12 18000.-11 16000.-10 14000.-10 12000.-6 10000.-2 8000. +2 6000. +6 4000. +122000. +15 surface+15.Which of the following statements is correct ? The height of the freezing level over the station is approximately 12000 FT. Assuming that the MSL pressure is 1013.25 hPa the true altitude of an aircraft would actually be higher than the indicated altitude. The layer between 16000 and 18000 FT is absolutely unstable The temperature at 10000 FT is in agreement with the temperature in the ICAO Standard Atmosphere.

8 - The first clouds are thin, wispy cirrus, followed by sheets of cirrus and cirrostratus, and altostratus. The sun is obscured as the altostratus thickens and drizzle or rain begins to fall. The cloud base is lowering as Nimbostratus arrives. These phenomena describe the approach of a Warm front Sea-breeze front Trade wind front Cold front

9 - Which weather chart gives information about icing? Significant weather chart. 700 hPa chart. 500 hPa chart. Surface chart.

10 - After a sunny day, followed by a long clear night, you take-off from an airfield at mid- latitudes in the northern hemisphere an hour before sunrise. The field is not situated close to the coast. Though the pressure gradient is rather large, the easterly surface wind is weak. What do you expect? A little increase in wind speed and little veering of the wind up to a height of 5000 FT A large but gradual increase in wind speed and large but gradual veering of the wind up to a height of 5000 FT A squally wind up to great heights A sudden strong increase in wind speed and strong veering of the wind a short time after take-off

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