Lernkartei PPL(A) PL050 Meteorology (Seite 4 von 4)

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JET- STREAM can be found:

In he polar front zone.

Between two air masses with large humidity differences.

Between two air masses with small differences in temperature and humidity.

In low pressure area.

A chart for FL180 equals isobaric surface of:

500 hPa.

700 hPa.

850 hPa.

100 hPa.

METAR gives us:

Regular observations.

Special observations.

Weather forecast.

Warnings.

NOSIG means:

No significant changes of weather during next 2 hrs.

Absence of TAF.

Absence of METAR.

Absence of warning

Continous precipitation is from following clouds:

Stratus.

Cumulus.

Stratocumulus.

Cirrus.

Continuous precipitaions are:Continuous precipitations are:

Before a warm front .

After passage of a warm front.

During fast-moving cold front.

Before slow-moving cold front.

Continuous precipitations are:

Before a warm front .

After passage of a warm front.

During fast-moving cold front.

Before slow-moving cold front.

Vertical temperature gradient in troposphere is:

0.65° C/100 m.

1° C/100 m .

1.2° C/100 m .

0.4° C/100 m.

In fog visibility does not exceed:

1000 m.

100 m.

3000 m.

500 m.

St cloud base does not exceed:

600 m.

1000 m.

2000 m.

6000 m.

With continous moderate rain group of clouds is of the form:

OVC010.

BKN013CB.

STC100.

FEW010.

RVR should be given when the visibility is:

Less than or equal to 1500 m.

Less than or equal to 2000 m.

Less than or equal to 3000 m.

Less than or equal to 1000 m.

SIGMET should be issued with the following thunderstorms:

FRQ TS.

ISOL TS.

OCAL TS.

RISK TS.

SIGMET is a:

Warning for airspace or route.

Warning for airport.

Warning for radar station.

Warning for meteorological station.

The temperature at a altitude of 500 m may be higher than ground level, where there is:

Inversion.

Isotherm .

Temperature drop of less than 0.2° C/100m.

The decrease of temperature 0.65° C/ 100m.

TEMPO mean change:

Short-term lasting less than 1 hour.

Short-term lasting less than half an hour.

Gradually.

Changes in the period of forecast validity.

In the group OVC070 encrypted clouds are:

As.

Ac.

Sc.

St.

In case of clear sky iceing is possible when:

An aircraft surface temperature is lower than the ambient air temperature.

An aircraft surface temperature is higher than the ambient air temperature.

An aircraft surface temperature is the same as the temperature of saturated air.

An aircraft is moving in the dry air mass.

The wind blows relatively to izohips:

Parallel.

Perpendicular.

At an angle of 30°.

At an angle of 60°.

PPL(A) PL050 Meteorology

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