IFR MET Pre-Study Quiz IFR MET Pre-Study Quiz Step 1 of 53 1% 1. Of all the gases present within the atmosphere, which one is the most important with regards to weather and why?* Nitrogen because it is the most abundant gas in the atmosphere. Oxygen because it binds with hydrogen and results in cloud formation. Water vapour because it is the only gas that changes state through the range of atmospheric conditions. Carbon dioxide because it results in unequal heating of the earth. 2. Which of the following is correct for the next two statements? When ice melts latent heat is _______ the atmosphere; when water vapour condenses latent heat is _______ the atmosphere.* absorbed from, absorbed from. released into; absorbed from. released into, released into. absorbed from, released into. 3. Which of the following is correct with regards to atmospheric layers, in ascending order?* Tropopause, stratosphere, mesosphere, thermosphere Tropopause, troposphere, stratopause, stratosphere Troposphere, stratosphere, thermopause, mesophere Troposphere, mesosphere, stratosphere, ionosphere 4. Which of the following are the correct ISA parameters?* MSL pressure = 1013.25mb, temperature at sea level = 15°C, lapse rate = 3°C/1000 feet. MSL pressure = 1012mb, temperature at sea level =15°C, lapse rate = 2°C/1000 feet. MSL pressure = 1012mb, temperature at sea level = 15°C, lapse rate = 1.5°C/1000 feet. MSL pressure = 1013.25mb, temperature at sea level = 15°C, lapse rate = 1.98°C/1000 feet. 5. Under ISA conditions, at approximately what altitude and temperature is the tropopause?* 36 000 feet ASL -56.5°C 36 000 feet AGL, -56.5°C 35 000 feet ASL, -55.5°C 35 000 feet ASL, -56.5°C 6. The earth absorbs __________ radiation from the sun, and re-radiates __________ radiation.* Long wave infrared, short wave ultraviolet Short wave ultraviolet, long wave infrared Short wave infrared, long wave ultraviolet Long wave ultraviolet, short wave infrared 7. Air that descends and heats is an example of what atmospheric heating process?* Convergence and coalescence Advection heating Convection heating Compressional heating 8. Rising air will cool at approximately what rate when it is not saturated?* 1.5°C / 1000 feet 1.98°C / 1000 feet 2.0°C / 1000 feet 3.0°C / 1000 feet 9. Rising air will cool at approximately what rate when it is saturated?* 1.5°C / 1000 feet 1.98°C / 1000 feet 2.0°C / 1000 feet 3.0°C / 1000 feet 10. If a parcel of air is warmer than the surrounding air it will _____________.* Rise until it reaches air that is the same temperature as it. Descend until reaching warmer air that is the same temperature as it. Rise until reaching the tropopause. Spread out horizontally wherever it may be until it cools to the temperature of surrounding air. 11. Stable air would be defined best by which of the following conditions?* Good visibilty and layer clouds Layered clouds and poor visibility Clouds of vertical development and continuous precipitation Light turbulence and continuous precipitation 12. What is an inversion?* When the air temperature increases with altitude. When the temperature of air is not changing with altitude. When the lapse rate is very steep. When the lapse rate is very shallow. 13. What is a trough?* An area of high pressure that extends in a long pattern A warm air mass aloft An elongated area of low pressure An area of standard pressure between an area of low pressure and high pressure. 14. What is Mean Sea Level (MSL) pressure?* The theoretical weight of a column of the atmosphere that exists below any location to sea level. It is calculated by adding the indicated pressure with the weight of a fictitious column of air between the elevation of the station and sea level. The combination of the station pressure with the weight of a fictitious column of air between the elevation of the station and mean sea level, based upon a sea level temperature of 15°C. It is calculated by adding the station pressure with the weight of a fictitious column of air between the elevation of the station and sea level based upon average temperature during the previous 12 hours. 15. Coriolis force increases in strength with an increase in _________, and is strongest at __________.* wind speed, Eath’s poles altitude, frontal boundaries altitude, equator pressure, frontal boundaries 16. Climbing from the surface to 3000 feet AGL, winds will _____________.* Veer and increase in strength Not change direction and increase in strength Veer and decrease in strength Back and increase in strength 17. What is the temperature of rising air at 8000 feet AGL if the surface temperature was 12°C and the air becomes saturated at 3000 feet AGL?* -12°C -4.5°C -2.5°C 0°C 18. What is not a requirement for fog formation?* Horizontal air movement High relative humidty Reduction of temperature dewpoint spread Condensation nuclei 19. Which of the following is not a type of fog?* Radiation fog Steam fog Advection fog Convection fog 20. There is an aluminum factory in a valley. Overnight, there are light winds and fog forms in the early morning. Which type of fog is this likely to be?* Frontal fog Valley fog Radiation fog Steam fog 21. Advection fog would result from which of the following scenarios?* A cold and dry air mass travelling over a warm ocean. A warm and moist air mass travelling over a cool ocean. A warm and moist air mass travelling over even warmer ground in the summer. A cold and moist air mass travelling over even cooler ground in the winter. 22. What differentiates one air mass from another? In other words, how would you define an air mass?* It’s a large section of the troposphere with uniform properties of pressure and moisture in the vertical. It’s a large section of the trosphere with uniform properties of temperature and moisture in the vertical. It’s a large section of the troposphere with uniform properties of temperature and pressure in the horizontal. It’s a large section of the troposphere with uniform properties of temperature and moisture in the horizontal 23. Which of the following is not an air mass that occurs in Canada in the summer time?* Continental arctic Maritime polar Maritime tropical Maritime arctic 24. What is a TROWAL?* An area of low pressure that has movedfrom water to land, therefore is has a high moisture content. A trough of warm air aloft. An occluded front. An area in which freezing rain occurs. 25. Frontal weather is determined by the moisture content of the __________, the stability of the ___________, and the speed of the __________.* Warm air mass, warm air mass, cold air mass Warm air mass, cold air mass, warm air mass Cold air mass, cold air mass, warm air mass Cold air mass, warm air mass, cold air mass. 26. Approaching a winter warm front from the cold air side, in what order do you expect to encounter precipitation?* Hail, snow, freezing rain, rain Ice pellets, snow grain, freezing rain, rain Snow, ice pellets, freezing rain, rain Rain, freezing rain, ice pellets, snow 27. The Minister of Transport has designated which of the following agencies to disseminate aviation weather observations and forecast to pilots?* Transport Canada Nav Canada Air Traffic Control Services Environment Canada 28. Which of the following is not considered to be an aviation weather forecast?* TAF METAR AIRMET GFA 29. How are calm winds reported in a METAR?* /////kt. CALM. VRB0kt. 00000kt. 30. What is meant by prevailing visibility?* The greatest distance that an object can be seen is a 360° field of view. The minimum visibility in a 360° field of view. The maximum distance that an object can be seen over half of the horizon. The visibility present for the majority of the time. 31. Select the decoded weather qualifiers of the following codes: RA, BR, GR* Rain, fog, snow grains Rain showers, mist, snow grains Rain, mist, hail Rain showers, mist, hail 32. In the following METAR, what does the term “CLR” signify? METAR CYPQ 122100Z AUTO 28013KT 260V330 9SM CLR M06/M14 A3058 RMK SLP369=* There is clear icing present. There is a layer of cirrocumulus at an unknown altitude. There are no clouds observed below 25 000 feet. There are no clouds observed in the sky. 33. When is vertical visibility (VV) reported in a METAR?* When a ground based obscuring phenomena covers all 8 octas of the sky. It is always reported. When the cloud layer is based at 50 feet AGL or less. Whenever fog is reported in the METAR. 34. When was the following METAR issued? METAR CYZV 111700Z VRB02KT 30SM SCT160 BKN230 M11/M24 A3034 RMK AC3CI3 SLP281=* On November 17th at 00Z. On the 11th day of the month at 17Z. In 2011, on the 1st day of the month at 17Z. On November 1st at 07Z. 35. In the following METAR, what type of cloud does the highest layer consist of? METAR CYVR 111700Z 11004KT 30SM FEW015 BKN043 BKN250 03/00 A2998 RMK CF1SC5CI1 SLP155=* Cumulofractus clouds Stratocumulus clouds Cirrus clouds All of the above 36. In the following METAR, how many octas of the sky are covered by the lowest layer? METAR CYWG 111500Z 31017KT 8 SM IC DRSN VCBLSN FEW012 FEW170 M17/M19 A2993 RMK SF1AC2 SLP160=* 1 1-2 2 3 37. In the following SPECI, what does the D signify? SPECI CYHZ 111510Z 01010KT 3/4 SM R23/P6000FT/D* They signify that runway light have been turned down so that visibility is not interfered with.. It signifies damp runways associated with the rain. It signifies a trend in visibility, that it is decreasing. It signifies that the ceiling is dropping. 38. What does “PRESFR” signify in the following METAR/SPECI? SPECI CYQY 051258Z 16030G50KT 21/2SM-RA BR OVC008 04/04 2980 RMK NS8 PRESFR SLP096=* It is a remark, probably due to winds, that the pressure from the rain is affecting the observer’s ability to make observations. Pressure is falling rapidly. It signifies that pressure is fluctuating rapidly. Is is a remark that the pressure fell then rose. 39. When "TEMPO" is included in a TAF, what does it indicate?* It indicates temporary fluctuations over a given time period It indicates changes not longer than one hour The weather it applies to may not cover more than one half of the forecast period. All of the above 40. When is the date of issue and validity period for Quebec City's (CYQB) in following TAF? TAF AMD CYQB 111519Z 1115/1212 06017G27KT P6SM SCT015 BKN030 0VC160 TEMPO 1115/1118 5SM-SN BKN015 OVC030 FM112200 06017G27KT 4SM -FZRA BR OVC008 FM120600 25015G25KT 4SM -SNPL BR OVC008 BECMG 1206/1208 P6SM NSW OVC010 PMK NXT FCST BY 111800Z=* February 12 and it is valid from 1519Z until 1200Z the next day February 12 and it is valid for 21 hours from 1500Z February 11 and it is valid from 1500Z until 1800Z February 11 and it is valid for 21 hours from 1500Z 41. What is the forecasted wind and visibility for Wabush (CYWK) at 1030Z? TAF AMD CYWK 120356Z 1203/1214 14005KT 1SM -SN OVC020 TEMPO 1203/1210 3SM -SN OVC030 FM121000 20008KT 6SM -SN OVC030 TEMPO 1210/1214 2SM -SN OVC 020 BECMG 1211/1213 25012G22KT RMK NXT FCST BY 120800Z=* Wind 200° true at 8 knots, visibility 6SM down to 2SM in light snow. Wind 250° true at 12 knots gusting to 25 knots, visibility 6SM in light snow. Wind 200° true at 8 knots, visibility 6SM in light snow. Wind 140° true at 5 knots, visibility of 1SM in light snow. 42. What is the lowest ceiling and visibility forecast for Montreal (CYUL) at 1830Z? TAF AMD CYUL 111442Z 1115/1212 04010G20KT P6SM SCT020 OVC200 TEMPO 1115/1117 OVC020 FM111700 04012G22KT 3SM OVC010 TEMPO 1117/1120 2SM-SN OVC008 PROB30 1117/1120 2SM -FZDZ BR OVC005 FM112000 05012G22KT WS010/14035KT 2SM -FZRA BR OVC008 TEMPO 1120/1124 6SM -FZRA BROVC012 BECMG 1122/1124 12010KT FM120000 14010KT WS010/18035KT 6SM -RA BR BKN008 OVC012 FM1200300 26018G28KT 2SM -SHSN OVC015 RMK NXT FCST BY 111800Z=* 1000 feet AGL and 3 SM 800 feet ASL and 2 SM 800 feet AGL and 2 SM 500 feet AGL and 2 SM 43. Referring to the Montreal (CYUL) TAF, what is the importance of "WS010/14035KT"? TAF AMD CYUL 111442Z 1115/1212 04010G20KT P6SM SCT020 OVC200 TEMPO 1115/1117 OVC020 FM111700 04012G22KT 3SM OVC010 TEMPO 1117/1120 2SM-SN OVC008 PROB30 1117/1120 2SM -FZDZ BR OVC005 FM112000 05012G22KT WS010/14035KT 2SM -FZRA BR OVC008 TEMPO 1120/1124 6SM -FZRA BROVC012 BECMG 1122/1124 12010KT FM120000 14010KT WS010/18035KT 6SM -RA BR BKN008 OVC012 FM1200300 26018G28KT 2SM -SHSN OVC015 RMK NXT FCST BY 111800Z=* This signifies windshear from 1000 feet ASL and above This signifies windshear from 1000 feet ASL and below This signifies the bottom of the windshear layer is at 1000 feet AGL This signifies the top of the windshear layer is at 1000 feet AGL 44. Referring to the following TAF for Smithers (CYYD), what is "NSW"? TAF AMD CYYD 132104Z 1321/1406 34015KT 3SM -SN SCT005 BKN008 OVC025 TEMPO 1321/1323 P6SM NSW SCT040 BKN080 FM132300 24010KT 4SM BKN020 OVC060 RMK NXT FCST BY 140100Z=* No significant weather is forecast A new system of weather is moving in, temporarily begin replaced with the forecast fair weather Winds are shifting from the north to the southwest, as can be seen from the rest of the forecast Nocturnal wind shear can be expected with the weather system 45. When choosing an alternate aerodrome for an IFR flight, what time must you consider the start time of a BECMG change group if the weather is forecast to get worse?* During the time in the middle of the beginning and end of the MECMG time period. At the end of the period specified after BECMG. 1 hour prior to the beginning of the BECMG period, to account for any delays. The beginning of the BECMG period. 46. Referring to the following TAF from Victoria (CYYJ), what is the lowest ceiling and visibility forecasted for the 0900Z on the 14th? TAF CYYJ 131738Z 1318/1418 VRB03KT P6SM SCT006 BKN030 TEMPO 1318/1401 SCT030 BECMG 1318/1320 16010KT FM140100 32008KT P6SM -RA OVC025 TEMPO 1403/1411 1SM -RA BR OVC008 FM141300 33008KT P6SM BKN012 PROB30 1413/1415 BKN004 FM141700 32010KT P6SM SCT020 BKN080 RMK NXT FCST BY 140000Z* 3000 feet AGL and better than 6SM 2500 feet AGL and better than 6SM 800 feet AGL and 1SM 800 feet ASL and 1SM 47. Referring to the following TAF for Rouyn-Noranda (CYUY), what are the lowest weather conditions could expect at 0800Z on the 12th? TAF CYUY 111138Z 1112/1212 35005KT P6SM FEW040 SCT180 FM111800 09006KT P6SM FEW040 SCT180 FM112300 07010KT 5SM -SN BKN040 OVC120 FM120300 08015G25KT 3/4SM -SN BLSN VV006 BECMG 1207/1209 09015G25KT 2SM -SN OVC015 RMK NXT FCST BY 111800Z=* 5SM visibility in light snow and a broken ceiling at 4000 feet 3/4SM visibility in light snow blowing snow and an obscured ceiling at 600 feet 2SM visibility in light snow and a overcast ceiling at 1500 feet P6SM visibility with a few clouds at 4000 feet and scattered clouds at 18 000 48. How long is a GFA valid for?* 6 hours 12 hours 30 hours 12 hours, plus a 12 hour IFR outlook. 49. If CBs, TCUs, or ACCs are forecasted in the GFA, how will its associated turbulence and icing be indicated?* It is only referenced above the comments on both types of GFA for significant turbulence and icing. They will be issued through AIRMETs and SIGMETs They are not depicted pictorially as CBs, TCCs and ACCs imply significant turbulence and icing. It will be depicted pictorially on the associated icing and turbulence GFA. 50. In a GFA, are forecasted clouds heights based on individual cloud layers or on the their summation?* Each successive higher cloud layer is a cumulative with the lower layers Each cloud layer is an individual layer which will be specified. If the cloud types are the same it is cumulative; otherwise they will be listed individually. Individual cloud heights and octas are added together regarless of the amount of ceiling the lower layer obscured. 51. What spacial area does "XTNSV" cover when used in a GFA?* Less than 25% 25-50% 50-75% Greater than 50% 52. What is the difference between "FRQ" and "XTNSV" when used in a GFA?* FRQ is used on the Icing and Turbulence GFA; XTNSV is used on the Clouds and Weather GFA. FRQ refers to local weather; XTNSV refers to frontal weather. FRQ is used for convective clouds and showers; XTNSV is used for non-convective clouds and weather. FRQ is based off of time at a particular location; XTNSV is based of spatial coverage area. 53. Is light icing or turbulence reported in the GFA?* No. Yes, but only in the comments box. Yes, pictorially in the weather information section by a blue solid line. Yes, pictorially in the weather information section by a blue solid line and in the comments box.
