PPL(A) PL050 Meteorology

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Sprache	English
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Erstellt / Aktualisiert	25.04.2022 / 29.04.2022
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Most significant weather changes occur:

With the passage of cold front.

With the passage of ridge.

In cols.

With the passage of warm front.

The longest duration has:

Advection fog.

Radiation fog.

Evaporated fog.

Evening fog.

The most dangerous icing occurs in clouds at temperatures:

0° C to - 10° C.

-10 ° C - 20° C.

0° C to +10° C.

Minus 20 °C - 40°C.

The most dangerous icing occurs in the clouds:

Cb, Ns.

St, Sc.

Ac, Cc.

Ci, Cs.

The lowest layer of the atmosphere is:

Troposphere.

Stratosphere.

Tropopause.

Stratopause.

The lowest is the cloud base of:

St.

Cu.

Sc.

As.

Most fogs occur:

During the late autumn and warm winter.

In spring.

In Summer.

During the cold winter.

The greatest turbulence occurs:

During the passage of cold front.

After the passage of cold front.

Before a warm front.

When fog disappears.

Night inversion is caused by:

Radiation of heat from the ground.

Evaporation.

Advection of cold air.

Advection of warm air.

Fog is when the visability is less than:

1000 m.

100 m.

500 m.

3000 m.

Cold occlusion occurs mainly in Poland during:

Warm season.

Cold season.

In the first quarter of the year.

In spring.

Hail falls from the following clouds:

Cb.

Ns.

St.

Ac.

Freezing rain give cause on the surface:

Glaze.

Frost.

Dew.

Wet pavement.

Drizzle can fall from:

St.

Ns.

Cs.

Cb.

Thermals are a conntected with following clouds:

Cu, Cb.

Sc, Ac.

St, Ns.

Ci, Cs.

Turbulence at low heights is caused by:

Gusty winds.

Winds without gusts. W

Weak winds.

Calm air.

During the thermals below clouds:

Turbulence occurs.

There is no turbulence.

Turbulence occurs only above clouds.

Turbulence occurs only away of the clouds.

Cloud base is the distance:

From the ground to the lower limit of the clouds.

From the ground to the upper limit of the clouds.

From sea level to the lower limit of the clouds.

From sea level to the upper limit of clouds.

Measurements using radiosonde are performed mainly at:

00 and 12 UTC.

03 and 15 UTC.

09 and 18 UTC.

Every hour.

Gust is a sudden increase of wind speed exceeding the average speed of:

5 m/s.

10 m/s.

3 m/s.

5 knots.

Warm air rising up from (temperature gradient - dry laps rate):

Is cooled by 1 ° C/100 m.

Is cooled by 0.5 ° C / 100 m.

Is heated by 1 ° C/100 m.

Is heated by 0.5 ° C/100 m.

Wind speed is higher in:

Low pressure areas.

Pressure gradientless area.

Through pressure.

High pressure areas.

Wind speed in jet streams exceeds:

80 kt.

100 kt.

100m/s.

200 km/h.

Wind speed with altitude most often:

Increases.

Decreases.

Does not change.

There is no relation between wind speed and altitude.

Before the warm front pressure:

Decreases.

Does not change.

Increases.

Initially decreases and then increases.

At he warm front, clouds are mainly:

Stratiform.

Cumuliform.

Strato- cumuliform.

Only cirrus.

At the warm front we have:

Long-term continuous rainfall.

Short showers.

Precipitation does not occur.

Drizzle.

With the passage of cold front:

Wind direction abruptly turns right and the speed increases.

Wind direction abruptly turns to the left and the speed increases.

Wind direction does not change the wind speed increases.

Wind direction abruptly turns right and the speed does not change.

Inversion caused by ground radiation arises:

During night hours.

In the afternoon.

In the morning.

At noon.

Temperature change with altitude in the troposphere is measured by:

Radiosonde.

Balloon.

Thermometer.

Radar.

Instability occurs when the real gradient is:

Larger than the adiabatic.

Less than adiabatic.

Equals adiabatic.

Independent of the adiabatic gradient.

Pressure drop indicates approach of:

Low pressure.

High pressure.

Ridges.

Throughts.

Slow air slide occurs when the front is:

Warm.

Cold.

Cold occlusion.

A secondary cold front.

The zone of precipitation associated with warm front is:

300-400 km before front line.

Behind the front.

Along the front line.

50-100 km before front line.

Graphic symbol, means:

Drizzle.

Shower rain.

Snow.

Hail.

The air temperature is measured at:

2 m.

10 m.

5 cm.

100 m.

Dew point temperature is the temperature:

In which the air reaches its saturation point.

In which dew occurs.

In which there are frosts.

In which water freezes.

Dew point is the temperature:

When the condensation of water vapor occurs.

When the evaporation is greatest.

When the dew turns into hoar frost.

When a frost arises.

For a standard atmosphere (ISA), the temperature in the lowest layer with altitude:

Decreases by 0.65° C/100 m.

Increases 0.5° C/100 m.

Decreases by 1° / 100 m.

Decreases by 1.2° / 100 m.

The temperature at which water vapor condenses is called:

Dew point.

Evaporation temperature.

0 C degrees.

The temperature of dry air.

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