Meteorology - Quiz BPL Hot Air - Balloon Pilot License

Question 1

The character of an air mass is given by what properties?

Accepted Answer

Region of origin and track during movement

Answer

Wind speed and tropopause height

Answer

Environmental lapse rate at origin

Answer

Temperatures at origin and present region

Question 2

What chart shows areas of precipitation?

Accepted Answer

Radar picture

Answer

GAFOR

Answer

Wind chart

Answer

Satellite picture

Question 3

Above the friction layer, with a prevailing pressure gradient, the wind direction is...

Accepted Answer

Parallel to the isobars.

Answer

At an angle of 30° to the isobars towards low pressure.

Answer

Perpendicular to the isobars.

Answer

Perpendicular to the isohypses.

Question 4

What pressure pattern can be observed during the passage of a polar front low?

Accepted Answer

Falling pressure in front of the warm front, constant pressure within the warm sector, rising pressure behind the cold front

Answer

Falling pressure in front of the warm front, constant pressure within the warm sector, falling pressure behind the cold front

Answer

Rising pressure in front of the warm front, constant pressure within the warm sector, rising pressure behind the cold front

Answer

Rising pressure in front of the warm front, rising pressure within the warm sector, falling pressure behind the cold front

Question 5

How can wind speed and wind direction be derived from surface weather charts?

Accepted Answer

By alignment and distance of isobaric lines

Answer

By annotations from the text part of the chart

Answer

By alignment of lines of warm- and cold fronts

Answer

By alignment and distance of hypsometric lines

Question 6

With regard to thunderstorms, strong up- and downdrafts appear during the...

Accepted Answer

Mature stage.

Answer

Dissipating stage.

Answer

Thunderstorm stage.

Answer

Initial stage.

Question 7

The formation of medium to large precipitation particles requires...

Accepted Answer

Strong updrafts.

Answer

An inversion layer.

Answer

A high cloud base.

Answer

Strong wind.

Question 8

The barometric altimeter indicates height above...

Accepted Answer

A selected reference pressure level.

Answer

Mean sea level.

Answer

Ground.

Answer

Standard pressure 1013.25 hPa.

Question 9

What is the gas composition of "air"?

Accepted Answer

Oxygen 21 % Nitrogen 78 % Noble gases / carbon dioxide 1 %

Answer

Oxygen 78 % Water vapour 21 % Nitrogen 1 %

Answer

Oxygen 21 % Water vapour 78 % Noble gases / carbon dioxide 1 %

Answer

Nitrogen 21 % Oxygen 78 % Noble gases / carbon dioxide 1 %

Quiz Meteorology - Quiz BPL Hot Air - Balloon Pilot License