1) Q 24: A temperature of +15°C is recorded at an altitude of 500 metres above mean sea level. If the vertical temperature gradient is that of a standard atmosphere, what will be the temperature at the summit of a mountain 2500 metres above mean sea level?

2) Q 23: 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 approximately:

3) Q 22: In the mid-latitudes the stratosphere extends on average from:

4) Q 21: The international standard atmosphere (ISA) assumes that the temperature will reduce at a rate of:

5) Q 20: Between mean sea level and a height of 20 km the lowest temperature in the international standard atmosphere (ISA) is:

6) Q 19: The average height of the tropopause at a latitude of 50° is about:

7) Q 18: What is the most important constituent in the atmosphere from a weather standpoint?

8) Q 17: If you are flying at FL140 and the outside temperature is -8°C at what altitude will the freezing level be?

9) Q 16: If you are flying at FL300 in an air mass that is 15°C warmer than a standard atmosphere what is the outside temperature likely to be?

10) Q 15: How would you characterize an air temperature of -15°C at the 700 hPa level over western Europe?

11) Q 14: How does temperature vary with increasing altitude in the ICAO standard atmosphere below the tropopause?

12) Q 13: What is the approximate composition of the dry air by volume in the troposphere?

13) Q 12: In the lower part of the stratosphere the temperature:

14) Q 11: Which one of the following statements applies to the tropopause?

15) Q 10: What is the most likely temperature at the tropical tropopause?

16) Q 9: An outside air temperature of -30°C is measured whilst cruising at FL200. What is the temperature deviation from the ISA at this level?

17) Q 8: Which constant pressure altitude chart is standard for 4781 ft pressure level (FL50)?

18) Q 7: What is the boundary between the troposphere and the stratosphere called?

19) Q 6: At a certain position the temperature on the 300 hPa chart is -54°C, and according to the significant weather chart the tropopause is at FL330. What is the most likely temperature at FL350?

20) Q 5: The temperature at FL110 is -12°C. What will the temperature be at FL140 if the ICAO standard lapse rate is applied?

21) Q 4: The 200 hPa pressure altitude level can vary in height. In temperate regions which of the following average heights is applicable?

22) Q 3: In the International Standard Atmosphere the decrease in temperature with height below 11 km is:

23) Q 2: What, approximately, is the average height of the tropopause over the Equator?

24) Q 1: How does the height of the tropopause normally vary with latitude in the Northern Hemisphere?

25) In the mid-latitudes the stratosphere extends on an average from:

26) Which layer of the atmosphere contains more than 90% of all water vapour?

27) In the lower part of the stratosphere the temperature

28) The average height of the tropopause at 50°N is about:

29) The temperature at 10,000 FT in the International Standard Atmosphere is :

30) Going from the equator to the North Pole, the altitude of the tropopause

31) What, approximately, is the average height of the tropopause over the equator?

32) The thickness of the troposphere varies with:

33) The troposphere:

34) If you are flying at FL 120 and the outside temperature is -2°C, at what altitude will the “freezing
level” be?

35) The temperature at FL 140 is -12°C. What will the temperature be at FL 110 if the ICAO standard
lapse rate is applied?

36) 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?

37) 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?

38) The rate of decrease of temperature with height per 100 m in the International Standard
Atmosphere is:

39) 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?

40) The height and the temperature of the tropopause are respectively in the order of

41) The troposphere is the:

42) The lowest assumed temperature in the ICAO Standard Atmosphere is :

43) The temperature at FL 80 is +6°C. What will the temperature be at FL 130 if the ICAO standard
lapse rate is applied?

44) How does the height of the tropopause normally vary with latitude in the northern
hemisphere?

45) The temperature at FL 110 is -5°C. What will the temperature be at FL 50 if the ICAO standard
lapse rate is applied?

46) How would you characterise an air temperature of -15°C at the 700 hPa level over Western
Europe?

47) What is the boundary layer between troposphere and stratosphere called?

48) Which is true of the temperature at the tropopause?

49) How does temperature vary with increasing altitude in the ICAO standard atmosphere below
the tropopause?

50) The 0°C isotherm is forecast to be at FL 50.
At what FL would you expect a temperature of -6°C?

51) The tropopause is a level at which

52) Which statement is correct regarding the International Standard Atmosphere?

53) What is the most likely temperature at the tropical tropopause?

54) The tropopause is lower

55) At a certain position, the temperature on the 300 hPa chart is -48°C; according to the tropopause
chart, the tropopause is at FL 330. What is the most likely temperature at FL 350?

56) Which one of the following statements applies to the tropopause?

57) There is reversal of temperature in the atmosphere at 8 km because

58) Most of the transfer of heat in the atmosphere is due to

59) In ISA atmosphere the tropopause occurs at a height of

60) The knowledge of the height of tropopause is important for a pilot because

61) Heat transfer in the atmosphere is maximum due to

62) One of the characteristics of our atmosphere is

63) In ICAO ISA the atmosphere is assumed to be isothermal

64) Negative lapse rate of temperature is

65) Most of the water vapour in the atmosphere is confined up to

66) Lapse rate in the troposphere is produced by_________ and in the stratosphere by_________

67) Tropical Tropopause extends from the equator to Lat. 35°-40°.Over India it is at

68) In actual atmosphere the lapse rate could

69) The rate of fall of temperatures with height, called

70) In jet standard atmosphere the Lapse Rate is

71) Half of the atmospheric air mass is contained………..below

72) The atmosphere up to 80 km has a nearly similar composition and is called the Homosphere.

Its uniform composition is due to

73) Nacreous clouds occur in

74) In actual atmosphere temp. at 19 km is -60°C. Find the ISA deviation?

75) Pressure at MSL is 1002.25 hPa. Find the ISA deviation

76) Temperature at 2 km is 05°C what is ISA deviation

77) Noctilucent clouds occur in

78) CO2 and H2O keep the atmosphere

79) Additional oxygen is needed while flying above

80) Maximum concentration of ozone is at a height of

81) In ISA, the mean sea level temperature is …….

82) By volume, the proportion of CO2 in the atmosphere is

83) By volume, the approximate ratio of O2 to N2 in the atmosphere is

84) By weight, approximate ratio of O2 to N2 in the atmosphere is

85) The temperature in ISA at 17 km is

86) Mother of Pearl clouds occur in ………

87) The middle atmosphere layer with temperature inversion and stability

88) Stratosphere extends from Tropopause to

89) Most of atmospheric mass is contained in

90) Tropopause is discontinuous at about ……….

91) Stratosphere is ………..

92) Troposphere is generally

93) CO2 and H2O are also called

94) Tropos means

95) Atmosphere is heated by

96) Above 8 km the lower temperatures are over ………..

97) Height of tropopause

98) Higher the surface temperature__________ would be the tropopause

99) Height of Tropopause at Poles is

100) Height of Tropopause at equator is ………..

101) Lowest layer of atmosphere is ……..

102) Which statement concerning the tropopause is correct?

103) Which of the following statements concerning the tropopause is correct?

104) In relation to the total weight of the atmosphere, the weight of the atmosphere
between mean sea level and a height of 5500m is:

105) The troposphere is:

106) The height and the temperature of the tropopause are respectively in the order of:

107) What of the following is the most important constituent in the atmosphere
from a weather stand point?

108) Half the mass of the atmosphere is found in the first:

109) What is the most likely temperature at the tropical tropopause?

110) Why are indications about the height of the tropopause not essential for flight
documentation in the tropics?

111) What, approximately, is the average height of the tropopause over the equator?

112) How does the height of the tropopause normally vary with latitude in the
northern hemisphere?

113) The troposphere:

114) The average height of the tropopause at 50oN is about:

115) Which one of the following statement applies to the tropopause?

116) Which layer of the atmosphere contains more than 90 per cent of all water vapour?

117) The thickness of the troposphere varies with:

118) In the mid-latitudes the stratosphere extends on an average from:

119) Going from the equator to the north pole, the altitude of the tropopause:

120) In which layer is most of the atmospheric humidity concentrated?

121) What is the approximate composition of the dry air by volume in the troposphere?

122) The tropopause is lower;

123) The tropopause is a level at which:

124) The amount of water vapour which air can hold largely depends on:

125) What is the boundary layer between troposphere and stratosphere called

126) In the ISA the temperature is isothermal

127) One of the most important characteristics of the atmosphere is:

128) The atmosphere is a mixture of gasses of the following proportions:

129) The tropopause is:

130) Which statement is correct when considering the lower layers of the atmosphere:

131) The international standard atmosphere assumes a lapse rate of:

132) Which statement concerning the tropopause is correct?

133) Which of the following statements concerning the tropopause is correct?

134) In relation to the total weight of the atmosphere, the weight of the atmosphere
between mean sea level and a height of 5500m is:

135) The troposphere is:

136) The height and the temperature of the tropopause are respectively in the order of:

137) What of the following is the most important constituent in the atmosphere
from a weather stand point?

138) Half the mass of the atmosphere is found in the first:

139) What is the most likely temperature at the tropical tropopause?

140) Why are indications about the height of the tropopause not essential for flight
documentation in the tropics?

141) What, approximately, is the average height of the tropopause over the equator?

142) How does the height of the tropopause normally vary with latitude in the
northern hemisphere?

143) The troposphere:

144) The average height of the tropopause at 50oN is about:

145) Which one of the following statement applies to the tropopause?

146) Which layer of the atmosphere contains more than 90 per cent of all water vapour?

147) The thickness of the troposphere varies with:

148) In the mid-latitudes the stratosphere extends on an average from:

149) Going from the equator to the north pole, the altitude of the tropopause:

150) In which layer is most of the atmospheric humidity concentrated?

151) What is the approximate composition of the dry air by volume in the troposphere?

152) The tropopause is lower;

153) The tropopause is a level at which:

154) The amount of water vapour which air can hold largely depends on:

155) What is the boundary layer between troposphere and stratosphere called

156) In the ISA the temperature is isothermal

157) One of the most important characteristics of the atmosphere is:

158) The atmosphere is a mixture of gasscs of the following proportions:

159) Which statement is correct when considering the lower layers of the atmosphere: