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ATPL 50 METEOROLOGY |
| 50.05 PRECIPITATION |
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1
In what hpa range is an upper weather chart for fl 340 situated?
300 - 200 hpa |
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2
What is the vertical temperature lapse rate, up to 11 km, in the standard icao atmosphere ?
6.5° c per 1000 m |
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3
How does temperature vary with increasing altitude in the icao standard atmosphere below the tropopause?
Decreases |
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4
What winds to flow across the isobars at an angle rather than parallel to the isobars ?
Surface friction |
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5
In the lower layers of the atmosphere due to friction the wind changes direction towards the low pressure area because : subject/sec aragraph wording domanda rispostaa rispostab rispostac rispostad ck1 ck2 ck3 ck4
Wind speed decreases and therefore coriolis force decreases |
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6
The temperature at
-5° c |
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7
Generally northern southwesterly while most of the surface winds are southerly. what is the primary reason of difference between these two wind directions?
A strong pressure gradient at higher altitudes. |
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8
The rate of decrease of temperature with height per 100 m in the international standard atmosphere is :
0.65° c |
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9
In the international standard atmosphere the decrease in temperature with height below 11 km is
0.65° c per 100m |
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10
Which statement is correct regarding the international standard atmosphere ?
At msl temperature is 15° c and pressure is 1013.25hpa |
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11
With which type of cloud are tornadoes normally associated ?
Cumulonimbus |
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12
The diameter of a typical tornado is
100 to 150 metres |
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13
The lowest assumed
-56.5° c |
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14
A 200 hpa pressure altitude level can vary in height. in temperate regions which of the following average heights is applicable ?
Fl 300. |
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15
Friction between the air
Backing of the wind and increase of wind speed at the surface. |
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16
You are flying at 2 500 ft/agl, with a southerly wind, and intend to land at an airport, at sea level directly below. from approximately which direction would you expect the surface wind (mid-latitude, northern hemisphere)?
South-southeast. |
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17
At what time of the year
Spring, summer. are tornadoes most likely to occur in north america? |
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18
At the approach of a warm front (northern hemisphere) the wind direction changes from the surface up to the tropopause. the effect of this change is that the wind
Veers in the friction layer and veers above the friction layer |
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19
During periods of prolonged clear skies associated with anticyclonic conditions, the
Surface wind speed tends to be highest during the early afternoon |
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20
During a descent from 2000 ft above the surface to the surface (no frontal passage) the wind normally
Backs and decreases |
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21
In the northern hemisphere the wind at the surface blows
Counter-clockwise around, and toward the centre of, a low pressure area |
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22
What relationship exists between the wind at 3000 feet and the surface wind? is across the isobars toward the low pressure and the surface wind is weaker.
The wind at 3000 feet is parallel to the isohypses and the surface wind direction |
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23
The vertical extent of the friction layer depends primarily on
Stability, wind speed, roughness of surface |
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24
In the northern hemisphere a pilot flying at 1000 ft/agl directly towards the centre of a low pressure area, will find the wind blowing from
Left and behind |
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25
If you are flying at fl 300 in an air mass that is 15° c warmer than a standard atmosphere, what is the outside temperature likely to be?
-30° c |
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26
If you are flying at fl 120 and the outside temperature is -2° c, at what altitude will the "freezing level" be?
Fl 110 |
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27
In the northern hemisphere the gradient wind of a cyclonic pressure distribution is 350/24, over the sea the surface wind would approximate
340/20 |
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28
If you are flying at fl 100 in an air mass that is 10° c warmer than a standard atmosphere, what is the outside temperature likely to be?
+5° c |
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29
In the northern hemisphere with an anticyclonic pressure system the geostrophic wind at 2000 ft over the sea is 060/15. at the same position the surface wind is most likely to be
045/12 |
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30
A 850 hpa pressure level can vary in height. in temperate regions which of the following average heights is applicable ?
Fl 50 |
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31
A 700 hpa pressure level can vary in height. in temperate regions which of the following average heights is applicable ?
Fl 100 |
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32
A 300 hpa pressure level can vary in height. in temperate regions which of the following average heights is applicable ?
Fl 300 |
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33
A 500 hpa pressure level can vary in height. in temperate regions which of the following average heights is applicable ?
Fl 180 |
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34
If paris reports a wind of 08010kt on the metar, what wind velocity would you expect to encounter at a height of 2000 feet above the ground ?
11020kt |
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35
If paris reports a wind of 16020kt on the metar, what wind velocity would you expect to encounter at a height of 2000 feet above the ground?
19040kt |
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36
If paris reports a wind of 19015kt on the metar, what wind velocity would you expect to encounter at a height of 2000 feet above the ground ?
22030kt |