1-The decrease in temperature, per 100 metres, in a saturated rising parcel of air at lower level of the atmosphere is approximately
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2-The decrease in temperature, per 100 metres, in a saturated rising parcel of air at lower level of the atmosphere is approximately
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3-The decrease in temperature, per 100 metres, in an unsaturated rising parcel of air is
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4-In a layer of air the decrease in temperature per 100 metres increase in height is more than 1°C. This layer can be described as being
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5-In a layer of air the decrease in temperature per 100 metres increase in height is more than 1°C. This layer can be described as being
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6-The QFF at an airfield located 400 metres above sea level is 1016 hPa. The air temperature is 10°C lower than a standard atmosphere. What is the QNH?
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7-The QNH at an airfield located 200 metres above sea level is 1009 hPa. The air temperature is 10°C lower than a standard atmosphere. What is the QFF?
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8-The QFF at an airfield in California located 69 metres below sea level is 1030 hPa. The air temperature is 10°C lower than a standard atmosphere. What is the QNH?
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9-The QFF at an airfield located 400 metres above sea level is 1016 hPa. The air temperature is 10°C higher than a standard atmosphere. What is the QNH?
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10-A parcel of unsaturated air is lifted to just below the condensation level and then returned to its original level. What is the final temperature of the parcel of air?
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11-The QNH at an airfield in California located 69 metres below sea level is 1018 hPa. The air temperature is 10°C higher than a standard atmosphere. What is the QFF?
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12-Consider a parcel of air being forced upwards in the atmosphere. The lapse rate of the surrounding air is less than the saturated adiabatic lapse rate. After the initial force is no longer effective, the parcel of air
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13-A moist but unsaturated parcel of air becomes saturated by
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14-A parcel of air is said to be saturated if it has a relative humidity of:
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15-A temperature of +15°C is recorded at an altitude of 500 metres above sea level. If the vertical temperature gradient is that of a standard atmosphere, what will the temperature be at the summit of a mountain, 2500 metres above sea level?
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16-In still air the temperature decreases at an average of 1.2°C per 100 m increase in altitude. This temperature change is called:
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17-If you are flying at FL 100 in an air mass that is 10°C warmer than a standard atmosphere, what is the outside temperature likely to be?
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18-The QNH at an airfield located 200 metres above sea level is 1022 hPa. The air temperature is not available. What is the QFF?
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19-A parcel of rising air stays unsaturated. Which of the following statements is correct?
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20-In the lower levels of the atmosphere when the environmental lapse rate is greater than saturated adiabatic lapse rate but less than dry adiabatic lapse rate - the air mass is described as being
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21-In the troposphere the decrease in pressure per 100 m increase in height is
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22-In the ICAO Standard Atmosphere the decrease in temperature with height below 11 km is
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23-A given mass of air is saturated with water vapour (no condensed water). If temperature increases
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24-If a saturated air mass descends down a slope its temperature increases at
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25-A parcel of unsaturated air is forced to rise through an isothermal layer. So long as it remains unsaturated, the temperature of the parcel
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26-What is, approximately, the temperature at 20000 FT in the ICAO Standard Atmosphere?
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27-At FL 180, the air temperature is -35°C.The air density at this level is:
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28-At FL 180, the air temperature is -35°C.The air density at this level is:
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29-At FL 180, the air temperature is -35°C. The air density at this level is:
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30-Rising air cools because
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31-Rising air cools because
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32-The total depth of the atmosphere is approximately
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33-An outside air temperature of -35°C is measured while cruising at FL 200. What is the temperature deviation from the ISA at this level?
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34-An outside air temperature of -35°C is measured while cruising at FL 200. What is the temperature deviation from the ISA at this level
0501
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35-Between mean sea level and a height of 20 km, the lowest temperature in the ICAO Standard Atmosphere (ISA) is:
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36-The temperature at 3000 ft. above mean sea level is forecast to be 3°C. What is the deviation from ICAO Standard Atmosphere?
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37-The QNH of an airport at sea level is 983 hPa and the temperature deviation from ISA is -15°C below FL 100. What is the true altitude of FL 100?
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38-If you are flying at FL 300 in an air mass that is 15°C warmer than a standard atmosphere, what is the outside temperature likely to be?
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39-The QNH at an airfield located at mean sea level is 1022 hPa. The air temperature is not available. What is the QFF?
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40-An air temperature of -55°C at the 200 hPa level over central Europe in summer is
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41-An air temperature of -30°C at the 300 hPa level over central Europe in summer is
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42-An air temperature of -15°C at the 700 hPa level over central Europe in summer is
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43-You are at FL120 with an outside air temperature is -2°C. Where would you find the freezing level?
0501
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44-For both saturated and unsaturated air instability will occur when the
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45-A sample of moist but unsaturated air may become saturated by
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46-The temperature at 10000ft in the ICAO Standard Atmosphere
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47-The most significant raising of the temperature of the atmosphere is
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48-What is the lowest temperature in standard atmosphere?
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49-When ...... in a parcel of air, relative humidity increases.
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50-The reason for the cooling of the parcel of air during the adiabatic process is…
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51-Which one of the following is not the lifting force of parcel of air?
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52-The Variation of Air Density with Temperature:
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53-You are flying at FL 160. Outside air temperature is -27°C, and the pressure at sea level is 1003 hPa. What is the true altitude?
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54-You are flying at FL 200. Outside air temperature is -40°C, and the pressure at sea level is 1033 hPa. What is the true altitude?
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55-You are flying at FL 160. Outside air temperature is -27°C, and the pressure at sea level is 1003 hPa. What is the true altitude?
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56-You are flying at FL 200. Outside air temperature is -40°C, and the pressure at sea level is 1033 hPa. What is the true altitude?
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57-A layer is absolutely unstable if the temperature decrease with height is
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58-According to ISA the temperature in the lower part of the stratosphere
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59-The temperature lapse rate of the ICAO standard atmosphere in the troposphere is:
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60-A temperature inversion indicates a state of the atmosphere which is
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61-The temperature at 10000 FT in the ICAO Standard Atmosphere is:
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62-The lowest assumed temperature in the International Standard Atmosphere (ISA) is :
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63-What is the density at sea level in the International Standard Atmosphere?
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64-In standard atmosphere, 500 hPa level corresponds to:
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65-Which of the processes listed below can cause air to become saturated?
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66-An inversion is a layer of air in which the temperature
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67-Which of the following statements concerning the lifting of a parcel of air is correct ?
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68-As a parcel of air warms, its ability to hold water vapor:
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69-In an area of converging air in low level
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70-What causes the highest percentage of the atmosphere lies under the 50% of lower Troposphere?
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71-The rate of cooling of ascending saturated air is less than the rate of cooling of ascending unsaturated air because:
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72-Consider a parcel of air which is moved upwards in the surrounding air by an external force. Which one of the following situations describes instability?
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73-A layer in which the temperature decreases with 1°C per 100m increasing altitude is
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74-An isothermal layer is a layer of air in which the temperature
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75-The actual change of the temperature in the air mass with height is known as:
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76-The ICAO Standard Atmosphere (ISA) assumes that temperature will reduce at the rate of
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77-The ICAO Standard Atmosphere (ISA) assumes that temperature will reduce at the rate of
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78-Which of the following combinations of pressure and temperature is correct in the ICAO standard atmosphere?
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79-The upper wind and temperature chart of 250 hPa corresponds, in a standard atmosphere, to about
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80-The temperature remains constant through a given depth of atmosphere, it is described as
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81-What is the atmosphering pressure at sea level in the International Standard Atmosphere?
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82-THE ICAO STANDARD ATMOSPHERE (ISA) assumes that, at mean sea-level,
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83-In relation to the total weight of the atmosphere, the weight of the atmosphere between mean sea level and a height of 5500 m is
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84-By volume, what percentage of the air in the lower troposphere consists of water vapour?
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85-At approximately what flight level is the subtropical jet stream found?
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86-In an air mass with no clouds the surface temperature is 15°C and the temperature at 1000 m/AGL is 13°C. This layer of air is:
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87-On the approach, the surface temperature is given as -5°C. The freezing level is at 3000 FT/AGL. At 4000 FT/AGL, there is a solid cloud layer from which rain is falling. According to the weather briefing, the clouds are due to an inversion caused by warm air sliding up and over an inclined front. Would you expect icing?
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88-Temperature decreases with altitude in standard atmosphere. Regarding this change in temperature, density should increase with altitude but it decreases. What is the reason?
0501
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89-At an altitude of 1650 feet AMSL, a temperature of +15°C is measured. What will the temperature be at an altitude of 8200 feet, if you consider the temperature gradient of the Standard Atmosphere?
0501
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90-Which layer of the atmosphere contains more than 90 per cent of all water vapour?
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91-In the lower layers of the atmosphere due to friction the wind changes direction towards the low pressure area because:
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92-If the QFE at Locarno (200 metres above sea level) is 980 hPa, what is the approximate QNH ?
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93-If the QNH at Locarno (200 metres above sea level) is 1015 hPa, what is the approximate QFE?
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94-If the QNH at Locarno (200 metres above sea level) is 1025 hPa, what is the approximate QFE?
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95-If the QFE at Locarno (200 metres above sea level) is 1000 hPa, what is the approximate QNH?
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96-If the QFE at an airport (200 metres above sea level) is 1000 hPa, what is the approximate QNH? (1 mb = 27 feet)
0501
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97-In the ICAO Standard Atmosphere (ISA), the fall in pressura with height, close to sealevel, is approximately 1 millibar for every
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98-How, if at all, is the relative humidity of an unsaturated air mass influenced by temperature changes?
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99-If the surface temperature is 15°C , then the temperature at 10000 FT in a current of ascending unsaturated air is:
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100-In the ICAO standard atmosphere, which of the following alternatives indicates the correct vertical temperature distribution in the lowest 11 km?