1- Maximum turbulence associated with the standing waves is likely to be:
Two wavelengths down wind and just above the surface.
Approximately one wavelength down wind of, and approximately level with, the top of the ridge.
Just below the tropopause above the ridge.
Down the lee side of the ridge and along the surface.
2- For the formation of mountain waves, the wind above the level of the ridge should:
Decrease or even reverse direction.
Increase initially, then decrease.
Increase with little change in direction.
Increase and then reverse in direction.
3- When flying in IMC in a region close to a range of hills 2000 ft high, in stable air and with wind direction at right angles to the axis of the range of hills, which of the following is probably the most dangerous practice:
Flying towards the hills, into the wind, at flight level 65.
Flying parallel to the hills on the downwind side at flight level 40.
Flying towards the hills downwind at flight level 55.
Flying parallel to the hills on the upwind side at flight level 40.
4- Which of the following statements referring to Jet Strems is correct:
CAT associated with jet streams is probably associated with the rapid wind shear in the vicinity of the jet.
The maximum windspeed in a Jet Stream increases with increase of height up to the tropopause and remains constant thereafter.
The core of a Jet Stream is usually located just below the tropopause in the colder air mass.
The rate of change of windspeed at any given level is usually greatest ont the warmer side of the jet.
5- The wind at square A3 is likely to be:
35 kt
50 kt
25 kt
light
6- The wind at ABC 4 is likely to be:
40 kt
A jet stream
7- Flight conditions at B1 are likely to be:
Smooth.
Turbulent.
Turbulent in breaking wave crests.
Turbulent due to marked up and down currents.
8- The most extreme turbulence can occur:
At B1.
At A2.
At ABC 3.
At B2,3,4 and C2,3,4.
9- Clear air turbulence, in association with a polar front jet stream in the Northern Hemisphere, is more severe:
Underneath the jet core.
In the center of the jet core.
Looking downstream on the right hand side.
Looking downstream on the left hand side.
10- CAT should be reported whenever it is experienced. What should be reported if crew and passengers feel a definite strain against their seat or shoulder traps, food service and walking is difficult and loose objects become dislodged:
Light CAT.
Extreme CAT.
Severe CAT.
Moderate CAT.
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