Meteorology - ATPL - Airline Transport Pilot license

Question 1

Assuming that an initial 'trigger' force is present, the conditions most likely to result in the formation of thunderstorms are

Accepted Answer

High relative humidity and instability throughout a deep layer

Answer

High surface temperature, low dew point and high dry adiabatic lapse rate

Answer

Rapid orographic cooling of cloud containing ice crystals

Answer

Intense surface heating, anticyclonic pressure system and relatively high freezing level

Question 2

In a low pressure system the convergence at the surface is caused by

Accepted Answer

Frictional forces

Answer

Centripetal forces

Answer

The inbalance of the horizontal gradient force and the Coriolis force

Answer

The curvature of the isobars

Question 3

Convective activity over land in mid-latitudes is greatest in

Accepted Answer

Summer in the afternoon.

Answer

Winter during the night and early morning.

Answer

Summer during the night and early morning.

Answer

Winter in the afternoon.

Question 4

Continuous updraughts occur in a thunderstorm during the

Accepted Answer

Initial stage.

Answer

Dissipating stage.

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Mature stage.

Answer

Period in which precipitation is falling.

Question 5

The boundary between polar and tropical air is known as:

Accepted Answer

Polar front.

Answer

Tropical front.

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Cold front.

Answer

Warm front.

Question 6

Mark the correct statement concerning the flight through an inversion caused by subsidence.

Accepted Answer

During climb, the reduced air density above the inversion layer will cause a certain decrease in the aircraft performance (that is, lift and thrust) and the pilot will experience a sudden improvement of visibility.

Answer

During climb, the increased air density above the inversion layer will cause a certain increase in the aircraft performance (that is, lift and thrust) and the pilot will experience a gradual change of the cross wind component.

Answer

During climb, the pilot of an aircraft probably will experience a slight deterioration of flight visibility when breaking through the top of the inversion layer and the general aircraft performance will decrease.

Answer

The pilot of an aircraft probably will experience a gradual increase of the cross wind component and a gradual improvement of flight visibility when breaking through the base of the inversion layer during descent.

Question 7

A cumulonimbus cloud at mid-latitudes in summer contains

Accepted Answer

Ice crystals, water droplets and supercooled water droplets

Answer

Only water droplets

Answer

Only ice crystals

Answer

Ice crystals and water droplets but never supercooled water droplets

Question 8

What is the relationship, if any, between QFE and QNH at an airport situated 50 ft below sea level?

Accepted Answer

QFE is greater than QNH.

Answer

QFE is smaller than QNH.

Answer

No clear relationship exists.

Answer

QFE equals QNH.

Question 9

In which approximate direction does the centre of a non-occluded frontal depression move?

Accepted Answer

In the direction of the warm sector isobars.

Answer

In the direction of the sharpest pressure increase.

Answer

In the direction of the isobars ahead of the warm front.

Answer

In the direction of the isobars behind the cold front.

Question 10

The temperature at FL 110 is -5°C. What will the temperature be at FL 50 if the ICAO standard lapse rate is applied?

Accepted Answer

+7°C

Answer

+3°C

Answer

-3°C

Answer

0°C

Exam questions Meteorology - ATPL - Airline Transport Pilot license

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