TEMA 4: 1. When ____ moist air passes over a surface which is ____ than the dew point of the air, _____ fog can form. This occurs over _____.
Cool, warmer, radiation, the sea.
Warm, cooler, radiation, the land only.
Cool, warmer, frontal, land.
Warm, cooler, advection, land and sea.
2. Radiation fog is most likely at an inland airfield in the UK with a relative humidity of 80% in the ____ with _____ and a wind of ____.
Autumn, clear skies, 2-8 kts.
Spring, 6/8 ST & SC, 2-10 kts.
Winter, clear skies, 15/20 kts.
Summer, clear skies, no wind.
3. Fog may be defined as:
A reduction of visibility to less than 1000 meters due to the presence of water vapor in the atmosphere.
A reduction of visibility to less than 1000 meters due to the presence of water droplets in suspension in the atmosphere.
A reduction of visibility to less than 1500 metes due to the presence of water droplets in suspension in the atmosphere.
A reduction of visibility to less than 1000 ft due to the presence of water vapor in the atmosphere.
4. Several types of pressure distribution may be associated with radiation fog but all have one feature in common which is:
Closely spaced isobars.
A tight pressure gradient.
A slack pressure gradient.
A rapidly falling pressure.
5. Advection fog:
Only occurs at night and early morning.
Is most likely with Polar Maritime air.
Will only clear by insolation.
Can sometimes last for 24 hours in winter.
TEMA 2: 1. What does the expression "broken (BKN)" mean?
Nil significant cloud cover.
3-5 eights of the sky is cloud covered.
3-4 eights of the sky is cloud covered.
5-7 eights of the sky is cloud covered.
2. In which of the following 19:00 UTC METAR reports, is the probability of fog formation, in the coming night, the highest?
041900Z 21010KT 7000 BKN020 16/14 Q1019 NOSIG=
041900Z 00000KT 9999 FEW030 SCT100 17/14 Q1017 NOSIG=
041900Z 00000KT 6000 NSC 13/12 Q1019 BECMG 3000 BR=
041900Z 00000KT 9999 FEW030 SCT100 17/14 Q1017 NOSIG
3. What does the abbreviation "NOSIG" mean?
No weather related problems.
No report received.
No significant changes.
Not signed by the meteorologist.
4. You receive the following METAR: LSGG 120730Z 00000KT 0300 R05/0700N FZFG VV001 M02/M02 Q1014 NOSIG = What will be the RVR at 0900 UTC?
900 m.
700 m.
700 ft.
300 m.
5. What does this mean in weather chart?
Severe icing between levels 280 and 360.
Light turbulence from ground to a level between levels 280 and 360.
Moderate turbulence between levels 280 and 360.
Mountain waves between levels 280 and 360.
6. Refer to the following TAF extract: TAF LELC 050500Z 0506/0606 VRB04KT 9999 FEW040 TX24/0512Z TN14/0506Z BECMG 0508/0511 11010KT BECMG 0518/0521 VRB02KT TEMPO 0521/0523 27003G13KT= What wind is forecast for 2400 UTC?
VRB04KT.
11010KT.
VRB02KT.
27003G13KT.
7. In refer to the following TAF extract: BECMG 0218/0221 2000 BR BKN004 PROB30 TEMPO 0221/0224 0500 FG VV001 What does the abbreviation "PROB30" mean?
Conditions will last for, at least, 30 minutes.
Probability of 30%.
The cloud ceiling should lift to 3.000ft.
Change expected in less than 30 minutes.
8. What does the expression "Scattered (SCT)" mean?
3-5 Eights of the sky is cloud covered.
5-7 Eights of the sky is cloud covered.
3-4 Eights of the sky is cloud covered.
9. Which of the following weather reports is a warning of conditions that could be potentially hazardous to aircraft in flight.
SIGMET.
SPECI.
TAF.
TREND.
10. In which weather report would you expect to find information about icing conditions on the runway?
AIRMET.
METAR.
11. What does the term METAR signify?
A METAR is a warning of dangerous meteorological conditions within a FIR.
A METAR signifies the actual weather report at an aerodrome and is generally issued in half-hourly intervals.
A METAR is a flight forecast, issued by the meteorological station several times daily.
A METAR is a landing forecast added to the actual weather report as a brief prognostic report.
12. The term PROB as used in a TAF message, indicates the probability in percentage, of phenomena described during a specific period. The numerical values immediately following the term PROB, are:
35 or 50.
30 or 40.
30 or 50.
40 or 50.
13. What does this mean in a weather chart?
Moderate icing and sever turbulence between levels 140 and 180.
Severe icing and turbulence between levels 140 and 180.
Moderate icing and turbulence between levels 140 and 180.
Sever icing and moderate turbulence between levels 140 and 180.
14. Refer to the following TAF extract: BECMG 0118/0121 2000 BR BKN004 BECMG 0121/0124 0500 FG VV001 What does the abbreviation "VV001" mean?
Vertical visibility 100 m.
Vertical visibility 100 ft.
RVR grater than 100 m.
RVR less than 100 m.
TEMA 6: 1. The actual change of temperature with height is known as:
The environmental lapse rate.
The adiabatic lapse rate.
The temperature curve.
The tephigram.
2. Ina saturated atmosphere air which is forced to rise will:
Tend to regain its former position if the ELR is less than the SALR.
Tend to regain its former position if the ELR is greater than the SALR.
Carry on rising if the ELR is less than the SALR.
Classified as stable air when the ELR is greater than the SALR.
3. The DALR is greater than the SALR because:
Saturated vapor pressure increases with increasing temperature.
Convection is more active in dry than in moist air.
The rate of cooling of saturated air is reduced by the release of latent heat of condensation.
Because of the release of latent heat of evaporation.
4. Study the information given in the table below. If the air is forced to rise, the conditions most likely to lead to instability are given in which line? Temp at 2000ft - Temp at 5000ft - Relative Humidity.
+15ºC, +10ºC, 50%.
+15ºC, +10ºC, 100%.
+15ºC, +11ºC, 100%.
+15ºC, +12ºC, 50%.
5. Which of the following statements is true?
The tropopause is the diving line between the stratosphere and the tropopause.
Stability increases as the environmental lapse rate decreases.
Heat is added to the environment by the evaporation of rain drops.
High surface temperatures and a plentiful supply of the moisture are the only conditions required for the development of thunderstorms.
6. When condensation takes place, the higher the temperature the _____ the amount of latent heat ______.
Lesser, released.
Greater, absorbed.
Greater, released.
Lesser, absorbed.
7. The air is stable if:
It moves very little.
There are a few changes in pressure.
When a lifting force is removed the air tries to return to its original position.
When a lifting force is removed the air continues to rise.
TEMA 7: 1. The size of raindrops form a cloud is greater if:
Air is stable and cloud is layer type.
Air is unstable and cloud is heap type.
Cloud type is AC or NS.
The relative humidity is high.
2. In aerodrome reports and forecasts the height of the could base refers to:
The height above mean sea level.
The height above aerodrome elevation.
The pressure altitude of the cloud base.
The height above the average ground level for the area.
3. Low cloud in temperature climates have a base from:
The surface to 6.500 ft.
1.000 to 6.500 ft.
The surface to 7.500 ft.
The surface to 7.500 meters.
4. In temperature latitudes which statement is correct:
Ci only occurs above 15.000ft.
Ci only occurs above 16.500ft.
Ci only occurs above 25.000ft.
Ci only occurs above 30.000ft.
5. The turbulence associated with cumulus cloud is:
Moderate.
Slight to nil.
Nil.
Moderate possibly severe.
6. Which of the following clouds is never a hazard to aviation:
Nimbostratus.
Noctilucent cloud.
Cumulonimbus cloud.
Stratus cloud.
7. Cloud formed by convection will always:
Be layer clouds.
Be Cu, CB or Ns.
Have a rising cloud base and may develop into CB as the day progress.
Form only in Polar maritime air.
The movement of cool maoist air over a warmer surface is likely to cause:
Cumulus or cumulonimbus cloud.
Advection fog.
Nimbostratus cloud.
Alto cumulus lenticular cloud.
9. Typical base heights in temperature latitudes, of altocumulus clouds are in the range of:
6.500 ft to 23.000 ft.
5.000 ft to 15.000 ft.
8.500 ft to 18.000 ft.
1.000 ft to 6.500 ft.
TEMA 8: The type of precipitation in which visibility is likely to be most reduced:
Drizzle.
Snow.
Light rain.
Sleet.
2. The type of precipitation usually associated with shallow stratocumulus is:
Mainly water droplets which can be supercooled if the temperature is low enough.
Ice crystals.
Supercooled water droplets only.
Large water droplets due to strong up-currents associated with this type of cloud.
3. If there are small cumulus in the morning summer, it is reasonable to forecast in the day:
Clear skies.
St and drizzle.
CB cloud.
Haze.
4. The term "shower" implies that:
Precipitation is in the form of rain and is continuous.
Precipitation is from cumulonimbus cloud and lasts for short periods.
Precipitation is intermittent and is from start form cloud.
Precipitation is continuous for long periods from cumuliform cloud.
5. The process by which water ice is transformed directly into vapour is known as:
Sublimation.
Supercooling.
Supersaturation cloud.
Radiation cooling.
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