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THE ATMOSPHERE
g




1. Howgdoesgthegheightgofgthegtropopausegnormallygvarygwithglatitudegingth
egNortherngHemisphere?
a. Itgdecreasesgfromgsouthgtognorth
b. Itgincreasesgfromgsouthgtognorth
c. Itgremainsgconstantgfromgnorthgtogsouth
d. Itgremainsgconstantgthroughoutgthegyear
2. What,gapproximately,gisgthegaveragegheightgofgthegtropopausegovergth
egEquator?
a. 8gkm
b. 16gkm
c. 11gkm
d. 50gkm
3. IngthegInternationalgStandardgAtmospheregthegdecreasegingtemperatur
egwithgheightgbelowg11gkmgis:
a. 0.5°C/100gm
b. 0.6°C/100gm
c. 0.65°/100gm
d. 1°C/100gm
4. Theg200ghPagpressuregaltitudeglevelgcangvarygingheight.gIngtemperategregion
sgwhichgofgthegfollowinggaveragegheightsgisgapplicable?
a. FL390
b. FL300
c. FL100
d. FL50
5. ThegtemperaturegatgFL110gisg-
12°C.gWhatgwillgthegtemperaturegbegatgFL140gifgthegICAOgstandardglapsegrate
gisgapplied?

a. -6°C
b. -18°C
c. -9°C
d. -15°C
6. Atgagcertaingpositiongthegtemperaturegongtheg300ghPagchartgisg-
54°C,gandgaccordinggtogthegsignificantgweathergchartgthegtropopausegisgatgFL3
30.gWhatgisgthegmostglikelygtemperaturegatgFL350?
a. -48°C
b. -60°C
c. -56.5°C

, d. -64°C
7. Whatgisgthegboundarygbetweengthegtropospheregandgthegstratospheregcalled?
a. Ionosphere
b. Stratosphere
c. Atmosphere
d. Tropopause
8. Whichgconstantgpressuregaltitudegchartgisgstandardgforg4781gf
tgpressureglevelg(FL50)?
a. 500ghPa
b. 300ghPa
c. 850ghPa
d. 700ghPa
9. Angoutsidegairgtemperaturegofg-
30°CgisgmeasuredgwhilstgcruisinggatgFL200.gWhatgisgthegtemperature
gdeviationgfromgthegISAgatgthisglevel?

a. 5°CgcoldergthangISA
b. 5°CgwarmergthangISA
c. 10°CgcoldergthangISA
d. 10°CgwarmergthangISA
10. Whatgisgthegmostglikelygtemperaturegatgthegtropicalgtropopause?
a. -56.5°C
b. -75°C
c. -40°C
d. -25°C
11. Whichgonegofgthegfollowinggstatementsgappliesgtogthegtropopause?
a. Itgis,gbygdefinition,gangisothermalglayer
b. Itgindicatesgagstronggtemperatureglapsegrate
c. Itgis,gbygdefinitiongagtemperatureginversion
d. Itgseparatesgthegtropospheregfromgthegstratosphere
12. Ingtheglowergpartgofgthegstratospheregthegtemperature:
a. isgalmostgconstant
b. decreasesgwithgaltitude
c. increasesgwithgaltitude
d. increasesgatgfirstgandgdecreasesgafterwards
13. Whatgisgthegapproximategcompositiongofgthegdrygairgbygvolu
megingthegtroposphere?
a. 10%goxygen,g89%gnitrogengandgthegrestgotherggases
b. 88%goxygen,g9%gnitrogengandgthegrestgotherggases
c. 50%goxygen,g40%gnitrogengandgthegrestgotherggases
d. 21%goxygen,g78%gnitrogengandgthegrestgotherggases

, 14. HowgdoesgtemperaturegvarygwithgincreasinggaltitudegingthegICAOg
standardgatmospheregbelowgthegtropopause?
a. Remainsgconstant
b. Decreases
c. Increases
d. Atgfirstgitgincreasesgandghighergupgitgdecreases
15. Howgwouldgyougcharacterizegangairgtemperaturegofg-
15°Cgatgtheg700ghPaglevelgovergwesterngEurope?
a. Withing+/-5°CgofgISA
b. 20°Cgbelowgstandard
c. Low
d. High
16. IfgyougaregflyinggatgFL300gingangairgmassgthatgisg15°Cgwarm
ergthangagstandardgatmospheregwhatgisgthegoutsidegtemperature
glikelygtogbe?


a. -15°C
b. -30°C
c. -45°C
d. -60°C
17. IfgyougaregflyinggatgFL140gandgthegoutsidegtemperaturegisg-
8°Cgatgwhatgaltitudegwillgthegfreezingglevelgbe?
a. FL75
b. FL100
c. FL130
d. FL180
18. Whatgisgthegmostgimportantgconstituentgingthegatmospheregfromga
gweathergstandpoint?


a. Carbongdioxide
b. Oxygen

, c. Watergvapour
d. Methane
19. Thegaveragegheightgofgthegtropopausegatgaglatitudegofg50°gisgabout:
a. 8gkm
b. 11gkm
c. 14gkm
d. 16gkm
20. Betweengmeangseaglevelgandgagheightgofg20gkmgtheglowestgtempe
raturegingtheginternationalgstandardgatmosphereg(ISA)gis:
a. -273°C
b. -44.7°C
c. -56.5°C
d. -100°C
21. Theginternationalgstandardgatmosphereg(ISA)gassume
sgthatgthegtemperaturegwillgreducegatgagrategof:
a. 1.98°Cgperg1000gfeetgupgtog36g090gfeetgaftergwhichgitgremainsgconstantgt
og65g617gfeet
b. 1.98°Cgperg1000gfeetgupgtog36g090gfeetgandgthengwillgrisegatg0.3°Cgperg100
0gfeetgupgtog65g617gfeetgwhengitgwillgremaingconstant
c. 2°Cgperg1000gfeetgupgtog65g617gfeetgaftergwhichgitgwillgremaingconstantgt
og104g987gfeet
d. 2°Cgperg1000gfeetgupgtog36g090gfeetgandgwillgthengincreasegatg0.3°Cgpe
rg1000gfeetgupgtog65g617gfeet
22. Ingthegmid-latitudesgthegstratospheregextendsgongaveragegfrom:
a. 0gtog11gkm
b. 11gtog50gkm
c. 50gtog85gkm