Flashcards in MET PRT 3 actual Deck (16)
Which of the following is typical for the passage of a cold front in the summer?
a. Mainly layered clouds
b. Rapid increase in temperature once the front has passed
c. Rapid drop in pressure once the front has passed
d. Mainly towering clouds
What will be the effect on the reading of an altimeter of an aircraft parked on the ground during the period following the passage of an active cold front?
a. It will show a small increase or decrease
b. It will remain unchanged
c. It will have increased
d. It will have decreased
In a warm front occlusion
a. the warm air is lifted
b. the warm front becomes a front aloft
c. the cold air is lifted
d. the warm front overtakes the cold front
Over Central Europe what type of cloud cover is typical of the warm sector of a depressing during winter?
a. Fair weather CU
b. CI, CS
c. CU, CB
d. ST with drizzle
A small supercooled droplet that collides with an airfoil will most likely
a. freeze immediately and create rime ice
b. travel back over the wing, creating rime ice
c. travel back over the wing, creating clear ice
d. freeze immediately and create clear ice
In unstable air, surface visibility is most likely to be restricted by
c. low stratus
d. showers of rain or snow
Which of the following statements is true regarding moderate-to-severe airframe icing?
a. It always occurs in altostratus cloud
b. It may occur in the uppermost levels of a cumulonimbus capillatus formation
c. It will not occur in clear-sky conditions
d. It is unlikely to occur in nimbostratus cloud
An occlusion takes place when:
a. The front no longer moves.
b. Warm air displaces cold air.
c. A cold front catches up with a warm front.
d. Cold air displaces warm air.
What type of precipitation would you expect at anactive unstable cold front?
b. Showers associated with thunderstorms
c. Light to moderate continuous rain
d. Freezing rain
What type of front/occlusion usually moves the fastest?
a. Warm front
b. Cold occlusion
c. Cold front
d. Warm occlusion
Where is the coldest air to be found, in an occlusion with cold front characteristics?
a. At the junction of the occlusion
b. Behind the front
c. At the surface position of the front
d. Ahead of the front
Which one of the tracks (dashed lines) is represented by the cross-section shown on the left?
a. Track B-A
b. Track B-C
c. Track C-A
d. Track D-A
Visibility is reduced by haze when
a. dust particles are trapped below an inversion
b. a cold front just passed
c. a light drizzle falls
d. small waterdroplets are present
The main factor which contributes to the formation of very low clouds ahead of a warm front is the
a. warm air moving over a cold surface
b. saturation of the warm air by rain falling into it and evaporation
c. reduction of outgoing radiation due to clouds
d. saturation of the cold air by rain falling into it and evaporation
Flight visibility from the cockpit during approach in a tropical downpour can decrease to minimal
a. about 500 metres
b. about 1000 metres
c. about 200 metres
d. tens of metres