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Flashcards in MET PRT 3 actual Deck (16)
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1

Which of the following is typical for the passage of a cold front in the summer?

Select one:
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

d

2

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?

Select one:
a. It will show a small increase or decrease
b. It will remain unchanged
c. It will have increased
d. It will have decreased

d

3

In a warm front occlusion

Select one:
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

a

4

Over Central Europe what type of cloud cover is typical of the warm sector of a depressing during winter?

Select one:
a. Fair weather CU
b. CI, CS
c. CU, CB
d. ST with drizzle

d

5

A small supercooled droplet that collides with an airfoil will most likely

Select one:
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

a

6

In unstable air, surface visibility is most likely to be restricted by

Select one:
a. haze
b. drizzle
c. low stratus
d. showers of rain or snow

d

7

Which of the following statements is true regarding moderate-to-severe airframe icing?

Select one:
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

c

8

An occlusion takes place when:

Select one:
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.

c

9

What type of precipitation would you expect at anactive unstable cold front?

Select one:
a. Drizzle
b. Showers associated with thunderstorms
c. Light to moderate continuous rain
d. Freezing rain

b

10

What type of front/occlusion usually moves the fastest?

Select one:
a. Warm front
b. Cold occlusion
c. Cold front
d. Warm occlusion

c

11

Where is the coldest air to be found, in an occlusion with cold front characteristics?

Select one:
a. At the junction of the occlusion
b. Behind the front
c. At the surface position of the front
d. Ahead of the front

b

12

Which one of the tracks (dashed lines) is represented by the cross-section shown on the left?

Select one:
a. Track B-A
b. Track B-C
c. Track C-A
d. Track D-A

d

13

Visibility is reduced by haze when

Select one:
a. dust particles are trapped below an inversion
b. a cold front just passed
c. a light drizzle falls
d. small waterdroplets are present

a

14

The main factor which contributes to the formation of very low clouds ahead of a warm front is the

Select one:
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

d

15

Flight visibility from the cockpit during approach in a tropical downpour can decrease to minimal

Select one:
a. about 500 metres
b. about 1000 metres
c. about 200 metres
d. tens of metres

d

16

How are the air masses distributed in a cold occlusion?

Select one:
a. The coldest air in front of and the less cold air is behind the occlusion; the warm air mass is above ground level
b. The coldest air in front of and the warm air behind the occlusion; the less cold air is above ground level
c. The coldest air behind and the warm air in front of the occlusion; the less cold air mass is above ground level
d. The coldest air mass behind and the less cold air in front of the occlusion; the warm air mass is above ground level

d