METEOROLOGY.pdf

Total 1291 Questions METEOROLOGY THE ATMOSPHERE - Composition, extent, vertical division Question The troposphere is the: Choices Answers Correct A part of the atmosphere above the stratosphere B...

Total 1291 Questions METEOROLOGY THE ATMOSPHERE - Composition, extent, vertical division Question The troposphere is the: Choices Answers Correct A part of the atmosphere above the stratosphere B part of the atmosphere below the tropopause B C boundary between the mesosphere and thermosphere D boundary between the stratosphere and the mesosphere Ref All Question What is the boundary layer between troposphere and stratosphere called: Choices Answers Correct A Tropopause A B Ionosphere C Stratosphere D Atmosphere Ref All Question The amount of water vapour which air can hold largely depends on: Choices Answers Correct A relative humidity B air temperature B C stability of air D dew point Ref All Question The tropopause is a level at which: Choices Answers Correct A vertical currents are strongest B water vapour content is greatest C pressure remains constant D temperature ceases to fall with increasing height D Ref All Question The tropopause is lower; Choices Answers Correct A south of the equator than north of it METEOROLOGY THE ATMOSPHERE - Composition, extent, vertical division Question The tropopause is lower; B in summer than winter in moderate latitudes C over the North pole than over the equator C D over the equator than over the South Pole Ref All Question What is the approximate composition of the dry air by volume in the troposphere? Choices Answers Correct A 21% oxygen, 78% nitrogen, and the rest other gases A B 10% oxygen, 89% nitrogen, and the rest other gases C 88% oxygen, 9% nitrogen, and the rest other gases D 50% oxygen, 40$ nitrogen and the rest other gases Ref All Question In which layer is most of the atmospheric humidity concentrated? Choices Answers Correct A Troposphere A B Tropopause C Stratosphere D Stratopause Ref All Question The thickness of the troposphere varies with: Choices Answers Correct A latitude A B longitude C rotation of the earth D the wind Ref All Question Going from the equator to the north pole, the altitude of the tropopause: Choices Answers Correct A increases and its temperature increases B decreases and its temperature increases B C increases and its temperature decreases METEOROLOGY THE ATMOSPHERE - Composition, extent, vertical division Question Going from the equator to the north pole, the altitude of the tropopause: D decreases and its temperature decreases Ref All Question In the mid-latitudes the stratosphere extends on an average from: Choices Answers Correct A 85 to more than 200 km B 0 to 11 km C 50 to 85 km D 11 to 50 km D Ref All Question Which layer of the atmosphere contains more than 90 per cent of all water vapour? Choices Answers Correct A Troposphere A B Lower stratosphere C Upper stratosphere D Ionosphere Ref All Question Which one of the following statement applies to the tropopause? Choices Answers Correct A It is, by definition, a temperature inversion B It is, by definition, an isothermal layer C It indicates a strong temperature lapse rate D It separates the troposphere from the stratosphere D Ref All Question The average height of the tropopause at 50oN is about: Choices Answers Correct A 14 km B 8 km C 11 km C D 16 km Ref All METEOROLOGY THE ATMOSPHERE - Composition, extent, vertical division Question The troposphere: Choices Answers Correct A has a greater vertical extent above the equator than above the poles A B contains all oxygen of the stratosphere C is the separation layer between the stratosphere and atmosphere D reaches the same height at all latitudes Ref All Question How does the height of the tropopause normally vary with latitude in the northern hemisphere? Choices Answers Correct A It remains constant throughout the year B It remains constant from north to south C It increases from south to north D It decreases from south to north D Ref All Question What, approximately, is the average height of the tropopause over the equator? Choices Answers Correct A 40 km B 8 km C 11km D 16 km D Ref All Question Why are indications about the height of the tropopause not essential for flight documentation in the tropics? Choices Answers Correct A The tropopause is generally well above the flight level actually flown A B The meteorological services are unable to provide such a chart C The temperatures of the tropical tropopause are always very cold and therefore not important D Tropopause information are of no value Ref All Question What is the most likely temperature at the tropical tropopause? Choices Answers Correct A -25oC METEOROLOGY THE ATMOSPHERE - Composition, extent, vertical division Question What is the most likely temperature at the tropical tropopause? B -75oC B C -55oC D -35oC Ref All Question Half the mass of the atmosphere is found in the first: Choices Answers Correct A 5 km A B 3 km C 8 km D 11 km Ref All Question What of the following is the most important constituent in the atmosphere from a weather stand point? Choices Answers Correct A Hydrogen B Water vapour B C Nitrogen D Oxygen Ref All Question The height and the temperature of the tropopause are respectively in the order of: Choices Answers Correct A 16 km and -40oC over the poles B 16 km and -75oC over the equator B C 8 km and -40oC over the equator D 8 km and -75oC over the poles Ref All Question The troposphere is: Choices Answers Correct A deepest over the equator A B deepest over the poles C the same depth all over the earth METEOROLOGY THE ATMOSPHERE - Temperature Question The troposphere is: D shallowest over the poles in summer Ref All Question In relation to the total weight of the atmosphere, the weight of the atmosphere between mean sea level and a height of 5500m is: Choices Answers Correct A 25% B 1% C 50% C D 99% Ref All Question Which of the following statements concerning the tropopause is correct? Choices Answers Correct A The temperature of the tropopause at the equator and at the poles is equal B The temperature remains constant above and below the tropopause C The temperature of the tropopause at the equator is higher than at the poles D The temperature lapse rate changes abruptly at the tropopause D Ref All Question Which statement concerning the tropopause is correct? Choices Answers Correct A The temperature at the tropopause is approximately -80oC over the Poles and approximately - 40oC over the equator B Above the tropopause no clear air turbulence occurs C in the ICAO standard atmosphere the tropopause lies higher over the Poles than over the equator D The layer just above the tropopause is absolutely stable D Ref All Question Which is true of the temperature at the tropopause? Choices Answers Correct A It is higher in polar regions than in equatorial regions A B It is higher in equatorial regions than in polar regions C It is highest in middle latitudes METEOROLOGY THE ATMOSPHERE - Temperature Question Which is true of the temperature at the tropopause? D There is no significant difference with change of latitude Ref All Question Several physical processes contribute to atmospheric warming. Which of the following contribute the most? Choices Answers Correct A Absorption and evaporation B Solar radiation and conduction C Absorption and vaporisation D Convection and condensation D Ref All Question An outside air temperature of -35oC is measured while cruising at FL 200. What is the temperature deviation from the ISA at this level? Choices Answers Correct A 5oC colder than ISA B 10oC warmer than ISA C 5oC warmer than ISA D 10oC colder than ISA D Ref All Question A layer can be: Choices Answers Correct A unstable for unsaturated air and conditionally unstable B stable for saturated air and unstable for unsaturated air C unstable for unsaturated air and neutral for saturated air D stable for unsaturated air and unstable for saturated air D Ref All Question At a certain position, the temperature on the 300 hPa chart is -48oC; according to the tropopause chart, the tropopause is at FL 330. What is the most likely temperature at FL 350? Choices Answers Correct A -56.5oC B -50oC C -54oC C D -58oC Ref All METEOROLOGY THE ATMOSPHERE - Temperature Question Absolute instability exists whenever the environmental lapse rate: Choices Answers Correct A exceeds the saturated adiabatic lapse rate B exceeds the dry adiabatic lapse rate B C is less than the saturated adiabatic lapse rate D is between the dry and saturated adiabatic lapse rate Ref All Question A significant inversion at low height is a characteristic of: Choices Answers Correct A the passage of cold front B nocturnal radiation B C advection fog D cumulus clouds Ref All Question An inversion is a layer of air which is: Choices Answers Correct A absolutely unstable B absolutely stable B C conditionally unstable D conditionally stable Ref All Question An inversion is: Choices Answers Correct A an increase of temperature with height A B an increase of pressure with height C a decrease of pressure with height D a decrease of temperature with height Ref All Question When in the upper part of a layer warm air is advected the Choices Answers Correct A stability increases in the layer A METEOROLOGY THE ATMOSPHERE - Temperature Question When in the upper part of a layer warm air is advected the B stability decreases in the layer C wind will back with increasing height in the northern hemisphere D wind speed will always decrease with increasing height in the northern hemisphere Ref All Question Advection is: Choices Answers Correct A the same as convection B vertical motion of air C the same as subsidence D horizontal motion of air D Ref All Question The environmental lapse rate in an actual atmosphere: Choices Answers Correct A has a fixed value of 2oC/1000 ft B has a fixed value of 1oC/100m C has a fixed value of 0.65oC/100m D varies with time D Ref All Question In the lower part of the stratosphere the temperature: Choices Answers Correct A decreases with altitude B is almost constant B C increases with altitude D increases at first and decreases afterward Ref All Question An isothermal layer is a layer of air in which the temperature: Choices Answers Correct A increases with height at a constant rate B increases with height C decreases with height at a constant rate METEOROLOGY THE ATMOSPHERE - Temperature Question An isothermal layer is a layer of air in which the temperature: D remains constant with height D Ref All Question Which of the following is a common result of subsidence? Choices Answers Correct A Clear air turbulence at higher altitudes B CB-clouds and thunderstorms over a large sea C Wide spread NS and AS clouds and intense precipitation D An inversion over a large area with haze, mist D Ref All Question An air mass is called stable when: Choices Answers Correct A the vertical motion of rising air tends to become weaker and disappears A B the temperature in a given air mass decreases rapidly with height C the pressure in a given area is constant D the environmental lapse rate is high, with little vertical motion of air currents Ref All Question What is the technical term for an increase in temperature with altitude? Choices Answers Correct A Subsidence B Inversion B C Adiabatic D Advection Ref All Question The dry adiabatic lapse rate has a value of: Choices Answers Correct A 0.5oC/100m B 2oC/1000 ft C 0.65oC/100m D 1oC/100m D Ref All METEOROLOGY THE ATMOSPHERE - Temperature Question How would you characterise an air temperature of 15oC at the 700 hPa level over western Europe? Choices Answers Correct A Within +/-5oC of ISA B High C Low C D 20oC below standard Ref All Question In an air mass with no clouds the surface temperature is 15oC and the temperature at 1000m/AGL is 13oC. This layer of air is: Choices Answers Correct A unstable B stable B C a layer of heavy turbulence D conditionally unstable Ref All Question The rate of decrease of temperature with height per 100m in the International Standard Atmosphere is: Choices Answers Correct A 0.65oC A B 1oC C 0.5oC D variable Ref All Question The radiation of the sun heats: Choices Answers Correct A the air in the troposphere only directly if no clouds are present B the air in the troposphere directly C the water vapour in the air of the troposphere D the surface of the earth, which heats the air in the troposphere D Ref All Question From which of the following pieces of information can the stability of the atmosphere be derived? Choices Answers Correct A Surface temperature METEOROLOGY THE ATMOSPHERE - Temperature Question From which of the following pieces of information can the stability of the atmosphere be derived? B Environmental lapse rate B C Dry adiabatic lapse rate D Pressure at the surface Ref All Question What characteristic is associated with a temperature inversion? Choices Answers Correct A Stability A B Instability C Clear ice D Area of active storms Ref All Question Convective activity over land in mid-latitudes is greatest in: Choices Answers Correct A winter in the afternoon B winter during the night and early morning C summer during the night and early morning D summer in the afternoon D Ref All Question The dry adiabatic lapse rate: Choices Answers Correct A has a constant fixed value A B is greater in summer than in winter C is greater during the night than during the day D has a variable value Ref All Question The temperature at FL 160 is -22oC. What will the temperature be at FL 90 if the ICAO standard lapse rate is applied? Choices Answers Correct A -4oC B -8oC B C 0oC METEOROLOGY THE ATMOSPHERE - Temperature Question The temperature at FL 160 is -22oC. What will the temperature be at FL 90 if the ICAO standard lapse rate is applied? D +4oC Ref All Question The temperature at FL 140 is -12oC. What will the temperature be at FL 110 if the ICAO standard lapse rate is applied: Choices Answers Correct A -9oC B -18oC C -6oC C D -15oC Ref All Question The temperature at FL 80 is +6oC. What will the temperature be at FL 130 if the ICAO standard lapse rate is applied? Choices Answers Correct A +2oC B -6oC C 0oC D -4oC D Ref All Question The diurnal variation in temperature is largest when the sky is: Choices Answers Correct A clear and winds are strong B clear and winds are weak B C overcast and winds are weak D overcast and winds are strong Ref All Question On a clear sky, continental ground surface, wind calm, the minimum temperature is reached approximately: Choices Answers Correct A at the moment the sun rises B half an hour before sunrise C half an hour after sunrise C D one hour before sunrise Ref All METEOROLOGY THE ATMOSPHERE - Temperature Question The temperature at FL 110 is -5oC. What will the temperature be at FL 50 if the ICAO standard lapse rate is applied? Choices Answers Correct A -3oC B +3oC C 0oC D +7oC D Ref All Question The 0o isotherm is forecast to be at FL 50. At what FL would you expect a temperature of -6oC? Choices Answers Correct A FL 110 B FL 20 C FL 100 D FL 80 D Ref All Question A temperature of 15oC 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 Choices metres above sea level? Answers Correct A +4oC B +2oC B C 0oC D -2oC Ref All Question The value of the saturated adiabatic lapse rate is closest to that of the dry adiabatic lapse rate in: Choices Answers Correct A cumulus B freezing fog C stratus D cirrus D Ref All Question Around Paris on January 3rd at 1800 UTC, the surface temperature under shelter is 3oC. The sky is covered by 8 oktas of stratus. QNH is 1033 hPa. If the sky is covered all night, the minimum temperature of the Choices night of January 3rd to January 4th should be: Answers Correct METEOROLOGY THE ATMOSPHERE - Temperature Question Around Paris on January 3rd at 1800 UTC, the surface temperature under shelter is 3oC. The sky is covered by 8 oktas of stratus. QNH is 1033 hPa. If the sky is covered all night, the minimum temperature of the night of January 3rd to January 4th should be: A slightly above +3oC B significantly below 0oC C slightly below +3oC C D significantly above +3oC Ref All Question Which of the following is a common cause of ground or surface temperature inversion? Choices Answers Correct A Terrestrial radiation on a clear night with no or very light winds A B Warm air being lifted rapidly aloft, in the vicinity of mountainous terrain C The movement of colder air under warm air, or the movement of warm air over cold air D Heating of the air by subsidence Ref All Question How does temperature vary with increasing altitude in the ICAO standard atmosphere below the tropopause? Choices Answers Correct A increases B At first it increases and higher up it decreases C Remains constant D Decreases D Ref All Question How would you characterise an air temperature of 30oC at the 300 hPa level over western Europe? Choices Answers Correct A High A B Within +/- 5oC of ISA C Low D Very low Ref All Question How would you characterise an air temperature of 55oC at the 200 hPa level over western Europe? Choices Answers Correct A High METEOROLOGY THE ATMOSPHERE - Temperature Question How would you characterise an air temperature of 55oC at the 200 hPa level over western Europe? B Low C Very high D Within +/- 5oC of ISA D Ref All Question An inversion is a layer of air in which the temperature: Choices Answers Correct A increases with height more than 1oC/100m, B decreases with height more than 1oC/100m C increases with height C D remains constant with height Ref All Question A wide body takes off on a clear night in Dhahran, Saudi Arabia. Shortly after take off the aircraft¿s rate of climb drops to zero. This can be due to: Choices Answers Correct A low relative humidity B a very strong temperature inversion B C sand/dust in the engines D very pronounced downdrafts Ref All Question In still air the temperature decreases at an average of 1.2oC per 100m increase in altitude. This temperature change is called: Choices Answers Correct A environmental lapse rate A B saturated adiabatic lapse rate C dry adiabatic lapse rate D normal lapse rate Ref All Question In the disturbed temperate regions: Choices Answers Correct A winters are generally mild B the weather is mainly governed by travelling frontal depressions B C the wet season is normally from May to September METEOROLOGY THE ATMOSPHERE - Temperature Question In the disturbed temperate regions: D the surface winds are moderate westerlies Ref All Question Horizontal differences in the mean temperature of a layer are caused by: Choices Answers Correct A insulation B advection C differential heating of the earth¿s surface C D change of air mass Ref All Question Which of the following statements concerning the thermal wind component (TWC) is true? Choices Answers Correct A TWC decreases as the horizontal mean temperature gradient increases B TWC increases as the horizontal mean temperature gradient increases B C the greater the TWC, the greater the reduction in the upper wind D the greater the TWC, the greater the surface wind Ref All Question Which one of the following describes normal conditions? Choices Answers Correct A Temperature decreases with height in the troposphere A B Temperature increases with height in the troposphere C Temperature decreases with height in the stratosphere D Temperature decreases at a similar rate in the troposphere as in the stratosphere Ref All Question For international aviation meteorological purposes, temperature is measured in degrees: Choices Answers Correct A Fahrenheit B Celsius B C Absolute D Kelvin Ref All METEOROLOGY THE ATMOSPHERE - Temperature Question If the depth of the troposphere increases, the temperature at the tropopause must: Choices Answers Correct A decrease A B stay the same C increase D impossible to say Ref All Question Air at T = +16oC and DP = +4oC is forced from sea level over a 10,000 ft mountain range and descends back to sea level on the other side. If the leeward condensation level is observed to be 8,000 ft what will be the Choices final temperature? Answers Correct A 18oC B 20oC C 22oC C D 24oC Ref All Question A parcel of unsaturated air is forced to rise through an isothermal layer. So long as it remains unsaturated, the temperature of the parcel: Choices Answers Correct A decreases 0.65oC per 100m B remains constant C decreases 1oC per 100m C D becomes equal to the temperature of the isothermal layer Ref All Question Absolute instability in the atmosphere will occur when the environmental lapse rate is Choices Answers Correct A greater than both saturated adiabatic lapse rate and dry adiabatic lapse rate A B less than saturated adiabatic lapse rate C less than both saturated adiabatic lapse rate and dry adiabatic lapse rate D greater than saturated adiabatic lapse rate but less than dry adiabatic lapse rate Ref All Question According to ISA the temperature in the lower part of the stratosphere: Choices Answers Correct METEOROLOGY THE ATMOSPHERE - Temperature Question According to ISA the temperature in the lower part of the stratosphere: A decreases with altitude B is almost constant B C increases with altitude D increases at first and decreases afterward Ref All Question For both saturated and unsaturated air instability will occur when the Choices Answers Correct A environmental lapse rate is greater than both dry adiabatic lapse rate and saturated adiabatic A lapse rate B environmental lapse rate is greater than saturated adiabatic lapse rate but less than dry adiabatic lapse rate C environmental lapse rate is less than both dry adiabatic lapse rate and saturated adiabatic lapse rate D dry adiabatic lapse rate is less than saturated adiabatic lapse rate but greater than environmental lapse rate Ref All Question In the lower levels of the atmosphere when the environmental lapse rate is greater than saturated adiabatic lapse rate but les than dry adiabatic lapse rate ¿ the air mass is described as being Choices Answers Correct A conditionally unstable A B stable C unstable D absolutely unstable Ref All Question The temperature lapse rate of the standard atmosphere in the troposphere is: Choices Answers Correct A 2.5oC/1000 ft B 3oC/1000 ft C 6.5oC/1000 ft D 2oC/1000 ft D Ref All Question What is, approximately, the temperature at 20000 ft in the ICAO Standard Atmosphere? METEOROLOGY THE ATMOSPHERE - Temperature Question What is, approximately, the temperature at 20000 ft in the ICAO Standard Atmosphere? Choices Answers Correct A -20oC B -15oC C -25oC C D -30oC Ref All Question What positions are connected by isobars on the surface weather chart? Choices Answers Correct A Positions with the same air pressure at a given level A B Positions with the same temperature at a given level C Positions with the same wind velocity at a given level D Positions with the same relative pressure heights Ref All Question In the troposphere the decrease of pressure per 100m increase in height: Choices Answers Correct A is greater at higher levels than at lower levels B remains constant at all levels C is smaller at higher levels than at lower levels C D is in the order of 27 hPa near MSL Ref All Question An isohypse (contour): Choices Answers Correct A indicates the altitude of the zero degree isotherm B is the longest slope line of a frontal surface C is the limit between two air masses of different temperature D indicates the true altitude of a pressure level D Ref All Question The station pressure used in surface weather charts is: Choices Answers Correct A QNE METEOROLOGY THE ATMOSPHERE - Temperature Question The station pressure used in surface weather charts is: B QFE C QNH D QFF D Ref All Question Which of the following is true concerning atmospheric pressure? Choices Answers Correct A It is higher in winter than in summer B It decreases with height B C It is higher at night than during the day D It always decreases with height at a rate of 1 hPa per 8m Ref All Question Isobars on a surface chart are lines of equal: Choices Answers Correct A QFE B QFF B C QNE D QNH Ref All Question What is approximate vertical interval which is equal to a pressure change of 1 hPa at an altitude of 5,500m? Choices Answers Correct A 15m (50 ft) A B 8m (27 ft) C 32m (105 ft) D 64m (210 ft) Ref All Question The isobars drawn on a surface weather chart represent lines of equal pressure: Choices Answers Correct A at height of observatory B at a determined density altitude C reduced to sea level C METEOROLOGY THE ATMOSPHERE - Temperature Question The isobars drawn on a surface weather chart represent lines of equal pressure: D at flight level Ref All Question Between which latitudes are you most likely to find the region of travelling low pressure systems? Choices Answers Correct A 25o ¿ 35o B 10o ¿ 15o C 55o - 75o C D 35o - 55o Ref All Question Assume that an aircraft is flying in the northern hemisphere at the 500 hPa pressure surface on a heading of 270 degrees. Which of the following statements is correct? Choices Answers Correct A If in this pressure surface the wind comes from the direction 360 degrees, then true altitude is A increasing B If in this pressure surface the wind comes from the direction 180 degrees, then true altitude is increasing C If in this pressure surface the wind comes from the direction 20 degrees, then true altitude is increasing D If in this pressure surface the wind comes from the direction 090 degrees, then true altitude is increasing Ref All Question At altitude, the atmospheric pressure in a column of warm air is likely to be: Choices Answers Correct A lower than at the same height in a column of cold air B higher than at the same height in a column of cold air B C the same irrespective of the temperature D depends on the relative humidity Ref All Question Which of the following statements is true? Choices Answers Correct A High contour values are equivalent to high pressure A B Low contour values are equivalent to high pressures METEOROLOGY THE ATMOSPHERE - Temperature Question Which of the following statements is true? C High contour values are equivalent to low pressure D There is no direct relationship between contour values and pressure Ref All Question When flying towards high contour values an aircraft will experience: Choices Answers Correct A headwind B tailwind C port drift C D starboard drift Ref All Question Contour heights are: Choices Answers Correct A true heights AGL B true heights AMSL B C indicated heights above 1013.25 mb D do not indicate heights at all Ref All Question When flying from high to low contour values, which of the following is incorrect? Choices Answers Correct A the true height of the aircraft will be falling B the pressure altimeter will indicate a constant value C the indicated height of the aircraft will be constant D the indicated height of the aircraft will only be true if 1013.25 mb is set D Ref All Question You are making a long distance flight and have chosen a suitable cruising altitude for the whole flight. Towards the end of your flight, you have descended. What may be the reason for this? Choices Answers Correct A you are approaching a region of high pressure B you are approaching a region of low pressure B C standard pressure has dropped D temperature has increased METEOROLOGY THE ATMOSPHERE - Temperature Question You are making a long distance flight and have chosen a suitable cruising altitude for the whole flight. Towards the end of your flight, you have descended. What may be the reason for this? Ref All Question Select the correct statement regarding the wind direction in connection with the high and low pressure systems in the Northern Hemisphere: Choices Answers Correct A the winds blow counter clockwise around a high and clockwise in a low B the winds blow clockwise in both highs and lows C the winds blow clockwise in a high and counter clockwise in a low C D the winds blow counter clockwise in both highs and lows Ref All Question If you fly across the isobars towards a region of high pressure in the Northern Hemisphere you will: Choices Answers Correct A drift to the right B drift to the left B C experience no drift but experience a headwind D experience no drift but experience a tailwind Ref All Question According to definition, flight levels are surfaces with constant air pressure determined from a certain pressure value. Which is this value? Choices Answers Correct A 1013.25 hPa A B 1025.13 hPa C Actual QFE D Actual QNH Ref All Question If you have a column of air limited by two isobaric surfaces at a pressure difference of 100 hPa, the distance between the pressure surfaces will change if mean temperature and mean pressure of the column of Choices air change. In which of the following alternatives will the change of temperature and pressure interact to shorten the distance as much as possible? Answers Correct A The temperature increases and pressure increases B The temperature decreases and pressure increases B C The temperature increases and pressure decreases D The temperature decreases and pressure decreases METEOROLOGY THE ATMOSPHERE - Temperature Question If you have a column of air limited by two isobaric surfaces at a pressure difference of 100 hPa, the distance between the pressure surfaces will change if mean temperature and mean pressure of the column of air change. In which of the following alternatives will the change of temperature and pressure interact to shorten the distance as much as possible? Ref All Question Lines joining points of equal pressure are known as: Choices Answers Correct A Isotherms B Isopleths C Isobars C D Isotachs Ref All Question A pressure difference of 10 hPa close to the ground corresponds to a height difference of: Choices Answers Correct A about 50m B about 150m C about 300ft C D about 30ft Ref All Question A rising parcel of air which has no heat entering or leaving it, will: Choices Answers Correct A reduce in pressure, rise in temperature, decrease in density B maintain volume, decrease in density, reduce in pressure C maintain pressure, reduce in density, increase in volume D reduce in pressure, decrease in density, increase in volume D Ref All Question The QFF at an airfield located 400 metres above sea level is 1016 hPa. The air temperature is 10oC higher than a standard atmosphere. What is the QNH? Choices Answers Correct A 1016 hPa B More than 1016 hPa B C Less than 1016 hPa D It is not possible to give a definitive answer METEOROLOGY THE ATMOSPHERE - Temperature Question The QFF at an airfield located 400 metres above sea level is 1016 hPa. The air temperature is 10oC higher than a standard atmosphere. What is the QNH? Ref All Question Which of the following statements is correct? Choices Answers Correct A Cumulus clouds and a good viability are normally observed in a warm sector in winter B Cumulus clouds and a good visibility are normally observed in a warm sector in autumn C Normally atmospheric pressure stops falling rapidly behind a warm front, the air temperature C rises D At warm fronts thunderstorms are often observed Ref All Question Under what condition does pressure altitude have the same value as density altitude? Choices Answers Correct A When the altimeter has no position error B At sea level when the temperature is 0oC C At standard temperature C D When the altimeter setting is 1013.2 hPa Ref All Question At FL 180, the air temperature is -35oC. The air density at this level is: Choices Answers Correct A unable to be determined without knowing the QNH B greater than the density of the ISA atmosphere at FL 180 B C less than the density of the ISA atmosphere at FL 180 D equal to the density of the ISA atmosphere at FL 180 Ref All Question What happens if density altitude is 3000 ft at an airport whose elevation is 1000 ft? Choices Answers Correct A Take off and landing performance will be unaffected B The altimeter will indicate 3000 ft when the aircraft is on the ground C Take off and landing performance will be about the same as for an airport with an elevation of C 3000 ft D Indicated speed at 50 kt on take off and landing will be higher than in a standard atmosphere METEOROLOGY THE ATMOSPHERE - Temperature Question What happens if density altitude is 3000 ft at an airport whose elevation is 1000 ft? Ref All Question With all other quantities being constant, the density of the atmosphere increases with increasing: Choices Answers Correct A relative humidity B air pressure B C stability D temperature Ref All Question The lowest assumed temperature in the International Standard Atmosphere (ISA) is: Choices Answers Correct A -44.7oC B -273oC C -58.5oC C D -100oC Ref All Question A 500 hPa pressure level can vary in height. In temperate regions which of the following average heights is applicable? Choices Answers Correct A FL 180 A B FL 160 C FL 100 D FL 390 Ref All Question A 700 hPa pressure level can vary in height. In temperate regions which of the following average heights is applicable? Choices Answers Correct A FL 100 A B FL 180 C FL 300 D FL 390 Ref All METEOROLOGY THE ATMOSPHERE - Temperature Question The temperature at 10000 ft in the International Standard Atmosphere is: Choices Answers Correct A -20oC B 0oC C -5oC C D -35oC Ref All Question If you are flying at FL 120 and the outside temperature is -2oC, at what altitude will the freezing level be? Choices Answers Correct A FL 110 A B FL 130 C FL 150 D FL 90 Ref All Question A 850 hPa pressure level can vary in height. In temperate regions which of the following average heights is applicable? Choices Answers Correct A FL 300 B FL 100 C FL 50 C D FL 390 Ref All Question If you are flying at FL 300 in an air mass that is 15oC warmer than a standard atmosphere, what is the outside temperature likely to be? Choices Answers Correct A -30oC A B -45oC C -60oC D -15oC Ref All Question In the International Standard Atmosphere the decrease in temperature with height below 11 km is: Choices Answers Correct A 1oC per 100m METEOROLOGY THE ATMOSPHERE - Temperature Question In the International Standard Atmosphere the decrease in temperature with height below 11 km is: B 0.65oC per 100m B C 0.5oC per 100m D 0.6oC per 100m Ref All Question What is the vertical temperature lapse rate, up to 11 km, in the standard ICAO atmosphere? Choices Answers Correct A 2oC per 1000m B 4.5oC per 1000m C 3oC per 1000m D 6.5oC per 1000m D Ref All Question A 200 hPa pressure altitude level can vary in height. In temperate regions which of the following average heights is applicable? Choices Answers Correct A FL 50 B FL 300 C FL 100 D FL 390 D Ref All Question A 300 hPa pressure level can vary in height. In temperate regions which of the following average heights is applicable? Choices Answers Correct A FL 100 B FL 390 C FL 300 C D FL 50 Ref All Question If you are flying at FL 100 in an air mass that is 10oC warmer than a standard atmosphere, what is the outside temperature likely to be? Choices Answers Correct A +15oC B +5oC B C -10oC METEOROLOGY THE ATMOSPHERE - Temperature Question If you are flying at FL 100 in an air mass that is 10oC warmer than a standard atmosphere, what is the outside temperature likely to be? D -15oC Ref All Question Which statement is correct regarding the International Standard Atmosphere? Choices Answers Correct A At MSL temperature is 15oC and pressure is 1013.25 hPa A B At MSL temperature is 15oC and the decrease in temperature with height is 1oC per 100m C At MSL temperature is 10oC and the decrease in temperature with height is 1oC Ref: all Ref All Question Between mean sea level and a height of 20 km, the lowest temperature in the ICAO Standard Atmosphere (ISA) is: Choices Answers Correct A -44.7oC B -273oC C -56.5oC C D -100oC Ref All Question The ICAO Standard Atmosphere (ISA) assumes that temperature will reduce at the rate of: Choices Answers Correct A 2oC per 1000 ft up to 65617 ft after which it will remain constant to 104987 ft B 1.98oC per 1000 ft up to 36090 ft and will then rise at 0.3oC per 1000 ft up to 65617 ft when it will remain constant C 1,98oC per 1000 ft up to 36090 ft after which it remains constant to 65617 ft C D 2oC per 1000 ft up to 36090 ft and will then increase at 0.3oC per 1000 ft up to 65617 ft Ref All Question A vertical spacing of 1000 ft, is the standard required separation between two FL. Under conditions of cold air advection (ISA -15oC), what would the true vertical separation be? Choices Answers Correct A More than 1000 ft B It remains 1000 ft C Less than 1000 ft C D Without QNH information, it cannot be determined Ref ATPL A, H AND I.R. METEOROLOGY THE ATMOSPHERE - Temperature Question You are planning to fly across a mountain range. The chart recommends a minimum altitude of 12000 feet above mean sea level. The air mass you will be flying through is an average 10oC warmer than ISA. Your Choices altimeter is set to 1023 hPa (QNH of a nearby airport at nearly sea level). What altitude will the altimeter show when you have reached the recommended minimum altitude? Answers Correct A 12210 feet B 11520 feet B C 11250 feet D 11790 feet Ref ATPL A, H AND I.R. Question You intend to overfly a mountain range. The recommended minimum flight altitude is, according to the aviation chart, 15000 ft/AMSL. The air mass that you will fly through is on average 15oC warmer than the Choices standard atmosphere. The altimeter is set to QNH (1023 hPa). At what altimeter reading will you effectively be at the recommended minimum flight altitude? Answers Correct A 15900 ft B 13830 ft C 14370 ft D 14100 ft D Ref ATPL A, H AND I.R. Question At which pressure and temperature conditions may you safely assume that the minimum usable flight level at least lies at the same height, as the minimum safe altitude? Choices Answers Correct A In a cold low pressure region B At a temperature greater than or equal to that of the ISA and where the QNH is greater than or B equal to 1013 hPa C At a temperature less than or equal to that of the ISA and where the QNH is less than 1013 hPa D In a warm high pressure region Ref ATPL A, H AND I.R. Question The barometric compensator of an altimeter is locked on reference 1013.2 hPa. The aircraft has to land on a point with an elevation of 290 feet where the QNH is 1023 hPa. Assuming that 1 hPa corresponds to 27 ft, Choices the reading on the altimeter on the ground will be: Answers Correct A 20 ft A B 11 ft C -10 ft D 560 ft Ref ATPL A, H AND I.R. METEOROLOGY THE ATMOSPHERE - Temperature Question An aircraft is flying through the Alps on a very cold winters day. The regional QNH is 1013 hPa. During the flight, you circle around a mountain at an altitude of its summit. What reading will the aneroid Choices altimeter give, compared to the elevation of the summit? Answers Correct A The same altitude as the elevation of the summit B A lower altitude than the elevation of the summit C A higher altitude than the elevation of the summit C D There is insufficient information to come to a conclusion Ref ATPL A, H AND I.R. Question An aircraft is flying through the Alps on a warm summers day. The weather is fine, and there is a high pressure system in the area. During the flight, a mountain is passed at an altitude of its summit. What Choices reading will the aneroid altimeter give, compared to the summit¿s elevation? Answers Correct A There is insufficient information to come to a conclusion B A higher altitude than the elevation of the summit C The same altitude as the elevation of the summit D A lower altitude than the elevation of the summit D Ref ATPL A, H AND I.R. Question What information is required to convert a minimum safe altitude into a lowest usable flight level? Choices Answers Correct A Lowest value of QNH and the highest negative temperature deviation from ISA A B Highest value of QNH and the highest negative temperature deviation from ISA C Highest value of QNH and the highest positive temperature deviation from ISA D Lowest value of QNH and the lowest negative temperature deviation from ISA Ref ATPL A, H AND I.R. Question If atmospheric conditions exist such that the temperature deviation is ISA 10oC in the lower troposphere up to 18000 ft, what is the actual layer thickness between FL 60 and FL 120? Choices Answers Correct A 6240 ft A B 6000 ft C 5900 ft D 5760 ft Ref ATPL A, H AND I.R. Question During a flight over the sea at FL 100 from Marseille (QNH 1012 hPa) to Palma de Mallorca (QNH 1012 hPa), the true altitude is constantly increasing. What action, if any, should be taken? Choices Answers Correct METEOROLOGY THE ATMOSPHERE - Temperature Question During a flight over the sea at FL 100 from Marseille (QNH 1012 hPa) to Palma de Mallorca (QNH 1012 hPa), the true altitude is constantly increasing. What action, if any, should be taken? A None, the reason for the change is that the air around Palma is warmer than the air around A Marseille B Have your altimeter checked, because its readings are obviously wrong C Re-check the QNH because one of the QNH values must be wrong D Compensate by heading further to the left Ref ATPL A, H AND I.R. Question During a flight at FL 100 from Marseille (QNH 1012 hPa) to Palma de Mallorca (QNH 1015 hPa), an aircraft remains at a constant true altitude. The reason for this is that: Choices Answers Correct A the air at Marseille is colder than that at Palma de Mallorca B the altimeters are erroneous, and need to be tested C the air at Marseille is warmer than that at Palma de Mallorca C D one of the two QNH values may be incorrect Ref ATPL A, H AND I.R. Question During a flight over the sea at FL 100 from Marseille (QNH 1016 hPa) to Palma de Mallorca (QNH 1016 hPa), the true altitude is constantly decreasing. What is the probable reason for this? Choices Answers Correct A One of the QNH values must be wrong B The air at Marseille is warmer than that at Palma de Mallorca B C The altimeter is faulty D The aircraft is being blown off track to the left Ref ATPL A, H AND I.R. Question You plan a flight over a mountain range at a true altitude of 15000 ft/AMSL. The air is on an average 15oC colder than ISA, the pressure at sea level is 1003 hPa. What indication must the altimeter (setting 1013.2 Choices hPa) read? Answers Correct A 15690 ft B 16230 ft B C 14370 ft D 13830 ft Ref ATPL A, H AND I.R. Question You are flying over an airport at an indicated altitude of 5600 ft. Airport elevation = 2785 ft. The altimeter is set at the correct aerodrome QNH value of 993 hPa and the instrument error is zero, you are Choices crossing the airport at a height above ground of:(standard pressure setting = 1013 hPa, 1 hPa = 30 ft) Answers Correct METEOROLOGY THE ATMOSPHERE - Temperature Question You are flying over an airport at an indicated altitude of 5600 ft. Airport elevation = 2785 ft. The altimeter is set at the correct aerodrome QNH value of 993 hPa and the instrument error is zero, you are crossing the airport at a height above ground of:(standard pressure setting = 1013 hPa, 1 hPa = 30 ft) A 5000 ft B 5600 ft C 2815 ft C D 2215 ft Ref ATPL A, H AND I.R. Question Your pressure altimeter is set at 1000 hPa. You have been cleared to join the traffic circuit at 2600 ft and received current QNH = 1010 hPa. You join the circuit at 2600 ft but forget to reset your altimeter. Choices Other aircraft with correct altimeter settings indicating 2600 ft in the circuit will, compared to you, be flying: Answers Correct A 300 ft above B 300 ft below B C 100 ft above D 100 ft below Ref ATPL A, H AND I.R. Question An aircraft is flying at FL 75 over point A where the QNH is 1013 hPa, enroute to B where the QNH is 979 hPa. Assuming that 1 hPa equals 30 ft and that point B is 823 metres AMSL the terrain clearance over B is: Choices Answers Correct A 6480 ft B 4280 ft C 3780 ft C D 5680 ft Ref ATPL A, H AND I.R. Question An aircraft is to fly at an indicated altitude of 5000 ft from X (elevation 850 ft, QNH 984 hPA) to Y (elevation 2300 ft QNH 1024 hPa). Assuming that the altimeter sub-scale is set to 984 mbs and 1 hPa = 30 Choices ft, the height of the aircraft over X and Y will be: Answers Correct A 5000 ft; 3900 ft B 4150 ft; 3900 ft B C 4150 ft; 1500 ft D 5000 ft; 1500 ft Ref ATPL A, H AND I.R. Question An aeroplane flies at flight level 40. Elevation of the aerodrome: 990 ft QNH 976 hPa METEOROLOGY THE ATMOSPHERE - Temperature Question An aeroplane flies at flight level 40. Elevation of the aerodrome: 990 ft Choices QNH 976 hPa The tower clears the pilot to fly at 3000 ft QNH Which of the following statements is correct? Answers Correct A Only a small change of altitude is necessary A B The aeroplane has to climb about 1000 ft C The aeroplane has to descend about 1000 ft D The aeroplane has to descend about 2000 ft Ref ATPL A, H AND I.R. Question An aircraft maintains a constant indicated altitude of 4500 ft from A (360 ft/AMSL QNH 986 hPa) to B (690 ft/AMSL QNH 1011 hPa). Assuming that the altimeter sub-scale setting remains unchanged at 986 hPa, the Choices height of the aircraft above the surface is: Answers Correct A 4815 ft B 3135 ft C 4485 ft C D 5175 ft Ref ATPL A, H AND I.R. Question An aircraft maintains a constant indicated altitude of 5500 ft from A (1050 ft/AMSL QNH 968 hPa) to B (650 ft/AMSL QNH 1016 hPa). Assuming that the altimeter sub-scale setting remains unchanged at 968 hPa, the Choices height of the aircraft above the surface is: Answers Correct A 4854 ft B 6796 ft C 6146 ft C D 7446 ft Ref ATPL A, H AND I.R. Question An aircraft maintains a constant indicated altitude of 6500 ft from A (600 ft/AMSL QNH 1012 hPa) to B (930 ft/ALMSL QNH 977 hPa). Assuming that the altimeter sub-scale setting remains unchanged at 1012 hPa, the Choices height of the aircraft above the surface is: Answers Correct A 4625 ft A B 6515 ft C 5555 ft D 5225 ft Ref ATPL A, H AND I.R. METEOROLOGY THE ATMOSPHERE - Temperature Question An aircraft maintains a constant indicated altitude of 7500 ft from A (270 ft/AMSL QNH 1021 hPa) to B (1650 ft/AMSL QNH 983 hPa). Assuming that the altimeter sub-scale setting remains unchanged at 1021 hPa, the Choices height of the aircraft above the surface: Answers Correct A 6204 ft B 4824 ft B C 6876 ft D 6474 ft Ref ATPL A, H AND I.R. Question Given: Altimeter setting: 1013.2 hPa Choices Altimeter reading: 5000 ft Outside air temperature at 5000 ft: +5oC QFE: 958 hPa QNH: 983 hPa What is the true height of the aeroplane above the aerodrome? Answers Correct A 4325 ft B 4190 ft C 3515 ft C D 4865 ft Ref ATPL A, H AND I.R. Question You are flying over the sea at FL 250 and measure an outside temperature of 50oC. The pressure at sea level is 10213 hPa. What is your approximate true altitude calculated using normal vertical change in temperature Choices with increase in height? Answers Correct A 23770 ft/AMSL A B 26230 ft/AMSL C 26770 ft/AMSL D 23230 ft/AMSL Ref ATPL A, H AND I.R. Question (Refer to figure 050-14)An aircraft is flying from Point A to Point B on the upper level contour chart. The altimeter setting is 1013.2 hPa. Which of these statements is correct? Choices Answers Correct A The true altitude will be higher at B than at A B The true altitude will be higher at A than at B B C Wind speed at A is higher than at B METEOROLOGY THE ATMOSPHERE - Temperature Question (Refer to figure 050-14)An aircraft is flying from Point A to Point B on the upper level contour chart. The altimeter setting is 1013.2 hPa. Which of these statements is correct? D Wind speed at A and at B is the same Ref ATPL AND H Question (Refer to figure 050-15)An aircraft is flying from Point A to Point B on the upper level contour chart. The altimeter setting is 1013.2 hPa. Which of these statements is correct? Choices Answers Correct A Wind speed at B is higher than at A B The true altitude will be higher at A than at B C Wind speed at Madrid is higher than at A D The true altitude will be higher at B than at A D Ref ATPL AND H Question (Refer to figure 050-15)An aircraft is flying from Point A to Point B on the upper level contour chart. The altimeter setting is 1013.2 hPa. Which of these statements is correct? Choices Answers Correct A Wind speed at B is higher than at A B The true altitude will be higher at A than at B C Wind speed at A and at B is the same D The true altitude will be higher at B than at A D Ref ATPL AND H Question In Geneva, the local QNH is 994 hPa. The elevation of Geneva is 1411 ft. The QFE adjustment in Geneva is: Choices Answers Correct A 942 hPa A B 967 hPa C 961 hPa D 948 hPa Ref All Question An aircraft is descending to land under IFR. If the local QNH is 1009 hPa, what will happen to the altitude reading when the altimeter is reset at the transition level? Choices Answers Correct A It will increase B It will decrease B C It will remain the same D It will not be affected Ref All METEOROLOGY THE ATMOSPHERE - Temperature Question The QNH level at an airfield located 200 metres above sea level is 1009 hPa. The air temperature is 10oC lower than a standard atmosphere. What is the QFF? Choices Answers Correct A Less than 1009 hPa B 1009 hPa C More than 1009 hPa C D It is not possible to give a definitive answer Ref All Question An aircraft is flying at FL 80. The local QNH is 1000 hPa. After the second altimeter has been adjusted to the local QNH, the reading will be approximately: Choices Answers Correct A 7650 ft A B 8600 ft C 8350 ft D 8000 ft Ref All Question The QFF at an airfield in California located 69 metres below sea level is 1030 hPa. The air temperature is 10oC lower than a standard atmosphere. What is the QNH? Choices Answers Correct A It is not possible to give a definitive answer B Less than 1030 hPa C 1030 hPa D More than 1030 hPa D Ref All Question An aircraft lands at an airport (airport elevation 1240 ft, QNH 1008 hPa). The altimeter is set to 1013 hPa. The altimeter will indicate: Choices Answers Correct A 1200 ft B 1375 ft B C 1105 ft D 1280 ft Ref All Question The following temperatures have been observed over a station at 1200 UTC. Assume the station is at MSL. Height in feet. Temperature in degrees C. 20000 (-12) 18000 (-11), 16000 (-10), 14000 (-10), 12000 (-6), Choices 10000 (-2), 8000 (+2), 6000 (+6), 4000 (+12), 2000 (+15), surface (+15). Answers Correct METEOROLOGY THE ATMOSPHERE - Temperature Question The following temperatures have been observed over a station at 1200 UTC. Assume the station is at MSL. Height in feet. Temperature in degrees C. 20000 (-12) 18000 (-11), 16000 (-10), 14000 (-10), 12000 (-6), 10000 (-2), 8000 (+2), 6000 (+6), 4000 (+12), 2000 (+15), surface (+15). A The layer between 16000 and 18000 ft is absolutely unstable B The height of the freezing level over the station is approximately 12000 ft C The temperature at 10000 ft is in agreement with the temperature in the International Standard Atmosphere D Assuming that the MSL pressure is 1013.25 hPa the true altitude of an aircraft would actually be D higher than the indicated altitude Ref All Question An aircraft lands at an airport (airport elevation 540 ft, QNH 993 hPa) with the altimeter set to 1013 hPa. What will it indicate? Choices Answers Correct A 1080 ft A B 700 ft C 380 ft D 0 ft Ref All Question You are flying at FL 130, and your true altitude is 12000 ft. What is the temperature deviation from that of the standard atmosphere at FL 130 (QNH 1013.2 hPa)? Choices Answers Correct A ISA + 12oC B ISA +/- 0oC C ISA +20oC D ISA -20oC D Ref All Question The pressure altitude is equal to the true altitude if: Choices Answers Correct A the outside air temperature is standard for that height B standard atmospheric conditions occur B C the air pressure is 1013.25 hPa at the surface D the indicated altitude is equal to the pressure altitude Ref All Question Which of the following conditions would cause the altimeter to indicate a lower altitude than that actually flown? Choices Answers Correct METEOROLOGY THE ATMOSPHERE - Temperature Question Which of the following conditions would cause the altimeter to indicate a lower altitude than that actually flown? A Pressure altitude the same as indicated altitude B Atmospheric pressure lower than standard C Air temperature higher than standard C D Air temperature lower than standard Ref All Question What pressure is defined as QFE? Choices Answers Correct A The pressure reduced to sea level using actual temperatures B The pressure of the altimeter C The pressure at field elevation C D The pressure reduced to sea level using ISA temperatures Ref All Question During the climb after takeoff, the altimeter setting is adjusted at the transiktion altitude. If the local QNH is 1023 hPa, what will happen to the altimeter reading during the resetting procedure? Choices Answers Correct A It is not possible to give a definitive answer B It will increase C It will remain the same D It will decrease D Ref All Question An aircraft is flying at FL 180 on the northern hemisphere with a crosswind from the left. Which of the following is correct concerning its true altitude?= Choices Answers Correct A It remains constant B It increases C It decreases C D Without knowing temperatures at FL 180 this question cannot be answered Ref All Question In order to calculate QFE from QNH, which of the following must be known? Choices Answers Correct A Elevation and the temperature at the airfield B Temperature at the airfield METEOROLOGY THE ATMOSPHERE - Temperature Question In order to calculate QFE from QNH, which of the following must be known? C Elevation of the airfield and the temperature at MSL D Elevation of the airfield D Ref All Question If the QNH at Locarno (200 metres above sea level) is 1025 hPa, what is the approximate QFE? Choices Answers Correct A 1005 hPa B 995 hPa C 1000 hPa C D 1025 hPa Ref All Question You are flying at FL 200. Outside air temperature is -40oC and the pressure at sea level is 1033 hPa. What is the true altitude? Choices Answers Correct A 20660 feet B 19310 feet B C 21740 feet D 18260 feet Ref All Question The QNH at an airfield located 6 metres above sea level is 1022 hPa. The air temperature is not available. What is the QFF? Choices Answers Correct A It is not possible to give a definitive answer B Less than 1022 hPa C More than 1022 hPa D 1022 hPa D Ref All Question Which of the following conditions gives the highest value of the QNH? Choices Answers Correct A QFE = 1003 hPa, elevation = 1200 ft (366m) B QFE = 1000 hPa, elevation = 1200 ft (366m) C QFE = 995 hPa, elevation = 1600 ft (488m) C D QFE = 995 hPa, elevation = 1200 ft (366m) METEOROLOGY THE ATMOSPHERE - Temperature Question Which of the following conditions gives the highest value of the QNH? Ref All Question Which statement is true? Choices Answers Correct A QNH can be 1013.25 only for a station at MSL B QNH cannot be 1013.25 hPa C QNH is lower than 1013.25 at any time D QNH can be lower as well as higher than 1013.5 hPa D Ref All Question When the subscale is set to the QNH of an airfield the pressure altimeter indicates: Choices Answers Correct A zero while landing B elevation while landing B C elevation while landing only if conditions are as in the International Standard Atmosphere D zero while landing only if conditions are as in the International Standard Atmosphere Ref All Question The QNH at an airfield in California located 69 metres below sea level is 1018 hPa. The air temperature is 10oC higher than a standard atmosphere. What is the QFF? Choices Answers Correct A More than 1018 hPa A B Less than 1018 hPa C 1018 hPa D It is not possible to give a definitive answer Ref All Question QNH is defined as: Choices Answers Correct A The pressure at MSL obtained using the standard atmosphere B The pressure at MSL, obtained using the actual conditions C QFE reduced to MSL using the actual conditions D QFE reduced to MSL using the standard atmosphere D Ref All METEOROLOGY THE ATMOSPHERE - Temperature Question The QNH is equal to the QFE if: Choices Answers Correct A T actual < T standard B T actual = T standard C T actual > T standard D the elevation = 0 D Ref All Question The QNH of an airport at sea level is 983 hPa and the temperature deviation from ISA is -15oC below FL 100. What is the true altitude of FL 100? Choices Answers Correct A 9740 ft B 10160 ft C 8640 ft C D 11460 ft Ref All Question An aircraft is flying over the sea at FL 90; the true altitude is 9100 feet; local QNH is unknown. What assumption, if any, can be made about the air mass in which the aircraft is flying? Choices Answers Correct A It is colder than ISA B There is insufficient information to make any assumption B C It is warmer than ISA D Its average temperature is the same as ISA Ref All Question The QFF at an airfield located 400 metres above sea level is 1016 hPa. The air temperature is 10oC lower than a standard atmosphere. What is the QNH? Choices Answers Correct A It is not possible to give a definitive answer B More than 1016 hPa C 1016 hPa D Less than 1016 hPa D Ref All Question In order to reduce QFE to QNH, which of the following item(s) must be known? Choices Answers Correct A Elevation of the airfield and the temperature at the airfield METEOROLOGY THE ATMOSPHERE - Temperature Question In order to reduce QFE to QNH, which of the following item(s) must be known? B Temperature at the airfield C Elevation of the airfield and the temperature at MSL D Elevation of the airfield D Ref All Question After landing at an aerodrome (aerodrome elevation 1715 ft), the altimeter indicates an altitude of 1310 ft. The altimeter is set to the pressure value of 1013 hPa. What is the QNH at this aerodrome? Choices Answers Correct A 1015 hPa B 1028 hPa B C 1013 hPa D 998 hPa Ref All Question An aircraft is flying over the sea at FL 100, with a true altitude of 10000 feet; local QNH is 1003 hPa. What assumption, if any, can be made about the air mass in which the aircraft is flying? Choices Answers Correct A There is insufficient information to come to any conclusion B Its average temperature is about ISA C It is colder than ISA D It is warmer than ISA D Ref All Question Which weather condition lowers true altitude as compared to pressure altitude to a position where flight over mountains could be dangerous? Choices Answers Correct A Cold high B Warm depression C Cold low C D Warm high Ref All Question An aircraft flying at FL 100 from Marseille (QNH 1012 hPa) to Palma de Mallorca (QNH 1006 hPa) experiences no change to true altitude. The reason for this is that: Choices Answers Correct A the altimeters are erroneous, and need to be tested B the air at Palma de Mallorca is colder than that at Marseille C the air at Palma de Mallorca is warmer than that at Marseille C METEOROLOGY THE ATMOSPHERE - Temperature Question An aircraft flying at FL 100 from Marseille (QNH 1012 hPa) to Palma de Mallorca (QNH 1006 hPa) experiences no change to true altitude. The reason for this is that: D one of the two QNH values may be incorrect Ref All Question During a flight over the sea at FL 135, the true altitude is 13500 feet; local QNH is 1019 hPa. What information, if any, can be gained about the air mass in which the aircraft is flying? Choices Answers Correct A Its average temperature is the same as ISA B It is colder than ISA B C It is warmer than ISA D There is insufficient information to make any assumption Ref All Question For a given airfield the QFE is 980 hPa and the QNH is 1000 hPa. The approximate elevation of the airfield is: Choices Answers Correct A 120 metres B 600 metres C 540 metres D 160 metres D Ref All Question If the QFE at Locarnho (200 metres above sea lev