Meteorology

Question 1

In a SIGMET, how would thunderstorms or cumulonimbus cloud hidden in other clouds be reported?

Answer 1

EMBD TS

Question 2

In a TAF, what does SCT025 mean?

Answer 2

Scattered cloud with a cloud base of 2500 ft above aerodrome level

Question 3

In a METAR, cloud base is given relative to:

Answer 3

aerodrome level

Question 4

The tropopause describes the:

Answer 4

the boundary between the troposphere and the stratosphere

Question 5

The TAF for your aerodrome on the Scilly Isles reads: TAF EGHE 260818Z 2609/2618 19007KT 9999 FEW025 PROB30 TEMPO 2616/2618 6000 SHRA BKN014CB Describe the forecast conditions for the time period 1600-1800 that day.

Answer 5

30% probability that there will be showers, rain and cumulonimbus cloud for temporary periods

Question 6

When water changes from a higher energy state (vapour) to a lower energy state (liquid) it will:

Answer 6

give off heat energy

Question 7

What name is given to the situation where temperature rises as altitude is gained?

Answer 7

An inversion

Question 8

Heavy rain and lightning typically signify which stage of the thunderstorm life cycle?

Answer 8

Mature stage

Question 9

During a climb, your static vent ices over completely. What effect will this have on your altimeter?

Answer 9

it will give the appearance of level flight at that altitude

Question 10

What type of ice is usually formed when small supercooled water droplets freeze on a cold surface, producing a rough opaque deposit?

Answer 10

Rime ice

Question 11

VC is an abbreviation used in METARS to signify:

Answer 11

vicinity

Question 12

The METAR for Sleap is as follows: EGCV 122020Z 28003KT 8000 SKC 17/16 Q1028 Which of the following statements is most likely to be true?

Answer 12

High pressure is causing hazy conditions

Question 13

ou want to obtain a special forecast for a flight of 650 nautical miles. How much notice are you required to give?

Answer 13

At least 4 hours

Question 14

What is 71 degrees Celsius, expressed using the Fahrenheit scale?

Answer 14

160 degrees Fahrenheit

Question 15

What does the following meteorological symbol (drawn from a Significant Weather chart) indicate?

-v-v-

Answer 15

A line squall

Question 16

In a TAF, what does SCT025 mean?

Answer 16

Scattered cloud with a cloud base of 2500 ft above aerodrome level

Question 17

The surface temperature is 25 degrees Celsius, and the dew point is 22 degrees Celsius. Approximately what height would you expect the cloud base to be, given that the average environmental lapse rate up to 10,000ft agl is 2 degrees Celsius per 1000ft?

Answer 17

1000 ft

Question 18

Tropical maritime air masses are commonly:

Answer 18

stable, warm and moist

Question 19

The subsidence (sinking) of air flowing from a high pressure system leads to:

Answer 19

divergence at the ground level

Question 20

The saturated adiabatic lapse rate is approximately:

Answer 20

one half of the dry adiabatic lapse rate

Question 21

Unsaturated air will cool adiabatically at about 3 degrees Celsius for every 1000 ft. What name is given to this?

Answer 21

Dry Adiabatic Lapse Rate (DALR)

Question 22

In the northern hemisphere, when compared to the gradient wind strength, over land the surface wind may be:

Answer 22

one third of the strength, and backed approximately 30 degrees

Question 23

What is sublimation?

Answer 23

When a solid goes directly to a gaseous state

Question 24

What is 8 degrees Celsius, expressed using the Fahrenheit scale?

Answer 24

46 degrees Fahrenheit

Question 25

How long are civilian TAF’s usually valid for?

Answer 25

9, 24 or 30 hours

Question 26

On a warm day, there may be a weak flow of warmed air up a mountain slope. What name is given to this wind?

Answer 26

An anabatic wind

Question 27

As the warm front approaches at the surface, the air pressure will:

Answer 27

steadily fall

Question 28

As a result of solar heating, the earth’s temperature reaches its maximum:

Answer 28

in the mid afternoon

Question 29

On a weather chart, what abbreviation is used to describe conditions likely to be encountered ‘At Sea’?

Answer 29

SEA