Meteorology - ATPL - Airline Transport Pilot license

Question 1

The length, width and height of a typical mid-latitude jet stream are respectively

Accepted Answer

1000 nautical miles, 150 nautical miles, 10000 feet

Answer

1000 nautical miles, 150 nautical miles, 30000 feet

Answer

200 nautical miles, 5 nautical miles, 18000 feet

Answer

1000 nautical miles, 5000 to 8000 feet, 30000 feet

Question 2

Which of the following clouds are classified as medium level clouds in temperate regions?

Accepted Answer

AS, AC

Answer

CI, CC

Answer

SC, NS

Answer

CS, ST

Question 3

How, if at all, is the relative humidity of an unsaturated air mass influenced by temperature changes?

Accepted Answer

It decreases with increasing temperature.

Answer

It is only influenced by the amount of water vapor.

Answer

It is not influenced by temperature changes.

Answer

It increases with increasing temperature.

Question 4

The pressure system indicated when, in a vertical cross section, the lower situated pressure surfaces bulge upward and the higher situated pressure surfaces bulge downward is a:

Accepted Answer

Cold high pressure area

Answer

Cold low pressure area

Answer

Warm low pressure area

Answer

Warm high pressure area

Question 5

An air mass is unstable when

Accepted Answer

An ascending parcel of air continues to rise to a considerable height.

Answer

Temperature and humidity are not constant

Answer

Temperature increases with height

Answer

Pressure shows a marked variation over a given horizontal area

Question 6

Read this description: 'After such a fine day, the ring around the moon was a bad sign yesterday evening for the weather today. And, sure enough, it is pouring down outside. The clouds are making an oppressively low ceiling of uniform grey; but at least it has become a little bit warmer.' Which of these weather phenomena is being described?

Accepted Answer

A warm front

Answer

A blizzard

Answer

A cold front

Answer

Weather at the back of a cold front

Question 7

What conditions are most likely to lead to the formation of hill fog?

Accepted Answer

Humid stable air mass, wind blowing towards the hills.

Answer

High relative humidity and an unstable air mass.

Answer

Clear skies, calm or light winds, with relatively low humidity.

Answer

Precipitation which is lifted by the action of moderate winds striking the range.

Question 8

What are the images of satellites provided daily by the Weather Service used for?

Accepted Answer

To locate fronts in areas with few observation stations

Answer

To measure wind currents on the ground

Answer

To locate precipitation zones

Answer

To help provide 14-day forecasts

Question 9

In still air the temperature decreases at an average of 1.2°C per 100 m increase in altitude. This temperature change is called:

Accepted Answer

Environmental lapse rate

Answer

Saturated adiabatic lapse rate

Answer

Normal lapse rate

Answer

Dry adiabatic lapse rate

Question 10

Considering the route from Lisbon to Freetown, the Harmattan is a

Accepted Answer

NE wind affecting north-west Africa during November to April reducing visibility in rising dust.

Answer

SW monsoonal wind causing extensive areas of advection fog along the West African coast south of 15°N.

Answer

Localised depression giving squally winds.

Answer

Warm southerly dust-bearing wind affecting the coast of North Africa.

Exam questions Meteorology - ATPL - Airline Transport Pilot license

ATPL - Airline Transport Pilot license: Meteorology 10 Questions no time limit

Exam questions Meteorology - ATPL - Airline Transport Pilot license

ATPL - Airline Transport Pilot license: Meteorology 10 Questions no time limit

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