FIA - Weather

Question 0

The most frequent type of ground or surface-based temperature inversion is that produced by

Answer 0

Terrestrial radiation on a clear, relatively still night.

Question 1

Which is the primary driving force of weather on the earth?

Answer 1

The sun.

Question 2

Which weather conditions should be expected benath a low-level temperature inversion layer when the relative humidity is high?

Answer 2

Smooth air and poor visibility due to fog, haze, or low clouds.

Question 3

If the air temperature is +6°C at an elevation of 700 feet and a standard (average) temperature lapse rate exists, what will be the approximate freezing level?

Answer 3

3,700 feet MSL.

Question 4

If the air temperature is +12°C at an elevation of 1,250 feet and a standard (average) temperature lapse rate exists, what will be the approximate freezing level?

Answer 4

7,250 feet MSL.

Question 5

An altimeter indicates 1,850 feet MSL when set to 30.18. What is the approximate pressure altitude?

Answer 5

1,590 feet.

Question 6

What causes wind?

Answer 6

Pressure differences.

Question 7

The windflow around a low pressure is

Answer 7

Cyclonic.

Question 8

Winds at 5,000 feet AGL on a particular flight are southwesterly while most of the surface winds are southerly. This difference in direction is primarily due to

Answer 8

Friction between the wind and the surface.

Question 9

In the Northern Hemisphere a pilot making a long-distance flight from east to west would most likely find favorable winds associated with high and low pressure systems by flying to the

Answer 9

South of a high and north of a low.

Question 10

The general circulation of air associated with a high-pressure area in the Northern Hemisphere is

Answer 10

Outward, downward, and clockwise.

Question 11

Which statement is true regarding high or low pressure systems?

Answer 11

A low pressure area or trough is an area of rising air.

Question 12

Which is an operational consideration regarding actual air temperature and dewpoint temperature spread?

Answer 12

The temperature spread decreases as the relative humidity increases.

Question 13

The ratio of the existing water vapor in the air, as compared to the maximum amount that could exist at a given temperature, is called

Answer 13

Relative humidity.

Question 14

What is the process by which ice can form on a surface directly from water vapor on a cold, clear night?

Answer 14

Sublimation.

Question 15

When warm air moves over a cold lake what weather phenomenon is likely to occur on the Leeward side of the lake?

Answer 15

Fog.

Question 16

From which measurement of the atmospheric can stability be determined?

Answer 16

Ambient lapse rate.

Question 17

The formation of either predominately stratiform or predominantly cumuliform form clouds is dependent upon the

Answer 17

Stability of the air being lifted.

Question 18

At approximately what altitude above the surface would you expect the base of cumuliform clouds if the surface air temperature is 77°F in the dewpoint is 53°F?

Answer 18

5,500 feet AGL

Question 19

At approximately what altitude above the surface would you expect the base of cumuliform clouds in the surface temperature is 33°C and the dewpoint is 15°C?

Answer 19

8,200 feet AGL.

Question 20

If clouds form as result of very stable moist air being forced to ascend the mountain slope, the clouds will be

Answer 20

Stratus type with little vertical development and little or no turbulence.

Question 21

The height of bases of the middle clouds in the middle latitudes ranges from

Answer 21

6,500 to 23,000 feet.

Question 22

Which middle level clouds are characterized by rain, snow, or ice pellets posing a serious icing problem if temperatures are near or below freezing?

Answer 22

Nimbostratus.

Question 23

Consider the following air mass characteristics:
1. Cumuliform clouds
2. Stable lapse rate.
3. Unstable lapse rate.
4. Stratiform clouds and fog.
5. Smooth (air above the friction level) and poor visibility.
6. Turbulence up to about 10,000 feet and good visibility except in areas of precipitation.
A moist air mass which is colder than the surface over which it passes, frequently has which of the above characteristics?

Answer 23

1, 3 and 6.

Question 24

The weather conditions normally associated with unstable air is

Answer 24

Good visibility,. except in blowing sand or snow

Question 25

A moist, unstable air mass is characterized by

Answer 25

Cumuliform clouds and showery precipitation.

Question 26

What type weather is associated with advancing warm front that has moist, unstable air?

Answer 26

Cumuliform clouds, turbulent air, showery type precipitation.

Question 27

A moist, cold air mass that is being warmed from below is characterized, in part by

Answer 27

Showers and thunderstorms.

Question 28

What is a characteristic of stable air?

Answer 28

Restricted visibility.

Question 29

What type of weather can one expect from moist, unstable air and very warm surface temperature?

Answer 29

Strong updrafts and cumulonimbus clouds.

Question 30

What is a typical characteristic of a stable air mass?

Answer 30

Continuous precipitation.

Question 31

Frontal waves normally form on

Answer 31

Slow-moving cold fronts or stationary fronts

Question 32

Cool air moving over a warm surface is generally characterized by

Answer 32

Instability and showers.

Question 33

Which statement is true regarding a cold front occlusion

Answer 33

The air ahead of the warm front is warmer than the air behind the overtaking cold front.

Question 34

Low-level windshear which results in a sudden change of wind direction may occur

Answer 34

When there is a low-level temperature inversion with strong winds above the inversion.

Question 35

Which condition could be expected if a strong temperature inversion exists near the surface?

Answer 35

A windshear with the possibility of a sudden loss of airspeed.

Question 36

The most rapid accumulation of clear ice on aircraft in-flight may occur within temperatures between 0°C to -15°C in?

Answer 36

Cumuliform clouds.

Question 37

Which is an operational consideration regarding aircraft structural icing?

Answer 37

In order for structural ice to form the temperatures at the point where moisture strikes the aircraft must be 0°C (32°F) or colder.

Question 38

Tornadoes are most likely occur with which type of thunderstorms?

Answer 38

Steady-state thunderstorms associated with cold fronts or squall lines.

Question 39

Which feature is associated with the Cumulus stage of a thunderstorm?

Answer 39

Continuous updrafts.

Question 40

Which type of cloud is associated with violent turbulence and a tendency toward the production of funnel clouds?

Answer 40

Cumulonimbus mamma.

Question 41

Consider the following statements regarding hail as an in-flight hazard and select those which are correct. 1. There is a correlation between the visual appearance of thunderstorms and the amount of hail within them. 2. Large hail is most commonly found in thunderstorms which have strong of drafts and large liquid water content. 3. Hail may be found at any level within a thunderstorm but not in the clear area outside of the stormcloud. 4. Hail is usually produced during the mature stage of the thunderstorm's lifespan. 5. Hailstones maybe thrown upward and outward from a stormcloud for several miles. The true statements are:

Answer 41

2, 4, and 5

Question 42

Which statement is true concerning the in-flight hazard of hail?

Answer 42

Hailstones maybe thrown outward from a storm cloud for several miles.

Question 43

Hey almost likely be encountered

Answer 43

Beneath the anvil cloud of a large cumulonimbus.

Question 44

Radiation fog is most likely to occur under what conditions?

Answer 44

High humidity during the early evening, cool cloudless night with light winds, and favorable topography.

Question 45

Avection fog is formed as a result of

Answer 45

Moist air moving over a colder surface.

Question 46

Which in-flight hazard is most likely associated with warm fronts?

Answer 46

Precipitation induced fog.

Question 47

Fog associated with a warm front is a result of a saturation due to

Answer 47

Evaporation of precipitation.

Question 48

Which station is reporting the wind as calm?

Answer 48

KDAL.

Question 49

Consider the following statements regarding an aviation routine weather report (METAR). 1. A vertical visibility entry does not constitute a ceiling. 2. Fog (FG) can be reported only if the visibility is less than 5/8 mile. 3. The ceiling layer will be associated by a 'C' 4. Mist (BR) can be reported only if the visibility is 5/8 mile up to 6 miles. 5. Temperatures reported below zero will be prefixed with a '-'. 6. There is no provision to report partial obstructions. Select the true statements.

Answer 49

2, 4, and 6.

Question 50

Which station is reporting the lowest ceiling?

Answer 50

KFTW.

Question 51

The temperature dewpoint spread at KAUS is

Answer 51

4°C.

Question 52

GIVEN: KOUN 151355Z AUTO 22010KT 10SM CLR BLO 120 13/10 A2993 RMK A02 $. The ASOS report indicates that the location is

Answer 52

Possibly in need of maintenance.

Question 53

GIVEN: KLNC 131215Z 33025KT 1/2SM OVC005 00/M03 A2990 A02 SLPNO. This ASOS report indicates that the

Answer 53

Sea level pressure is not available. (SLPNO)

Question 54

In between 1000Z and 1200Z the visibility at KMEM is forecast to be

Answer 54

3 statute miles.

Question 55

Interpret the following radar weather report: LIT 1133 AREA 4TRW 22/100 88/170 196/180 220/115 C2425 MT 310 AT 162/110

Answer 55

The maximum top of the cells is located 162° and 110 NM from the station (LIT).

Question 56

The intensity of the turbulence reported at a specific altitude is

Answer 56

Light from 5,500 feet to 7,200 feet.

Question 57

The base and tops of the overcast layer reported by a pilot are

Answer 57

7,200 feet MSL and 8,900 feet MSL.

Question 58

In that TAF for KMEM what does "SHRA" a stand for?

Answer 58

Rain showers.

Question 59

Vertical visibility is shown on terminal aereodome forecasts (TAF) reports when the sky is

Answer 59

Obscured.

Question 60

In the TAF from KOKC, the clear sky becomes

Answer 60

Overcast at 2,000 feet during the forecast period between 2200Z and 2400Z.

Question 61

To determine the freezing level and areas of probable icing aloft, you should refer to

Answer 61

An AIRMET or SIGMET.

Question 62

What is the meaning of MVFR, as used in that categorical outlook portion of an aviation area forecast?

Answer 62

A ceiling of 1,000 to 3,000 feet and/or visibility of 3 to 5 miles.

Question 63

An aviation area forecast is valid for

Answer 63

12 hours with an additional 6 hours categorical outlook.

Question 64

What sky condition and visibility are forecast for upper Michigan in the eastern portions after 2300Z?

Answer 64

Ceiling 1,000 feet overcast and 3 to 5 statute miles visibility.

Question 65

The Chicago FA forecast section is valid until the twenty-fifth at

Answer 65

0800Z.

Question 66

Which sky condition and type obstructions to vision are forecast for upper Michigan in the western portions from 0200Z until 0500Z?

Answer 66

A ceiling becoming 1,000 feet overcast with visibility 3 to 5 statute miles in mist.

Question 67

What information would be covered in an AIRMET.

Answer 67

Extensive mountain obscurement.

Question 68

Which in-flight advisory would contain information on severe icing?

Answer 68

SIGMER.

Question 69

What information is contained in a CONVECTIVE SIGMET in the continuous United States?

Answer 69

Tornadoes, embedded, thunderstorms, and hail 3/4 inch or greater in diameter.

Question 70

What wind is forecast for STL at 9,000 feet?

Answer 70

230° true at 32 knots.

Question 71

Determine the wind and temperature aloft forecast for DEN at 9,000 feet?

Answer 71

230° true at 21 knots, temperature -4°C.

Question 72

On a surface analysis weather chart isobars are usually spaced at intervals of

Answer 72

4 millibars.

Question 73

What does this symbol mean on a surface analysis chart?

Answer 73

Squall line.

Question 74

Which symbol used on a surface analysis weather chart represents a dissipating warm front?

Answer 74

.

Question 75

On a weather depiction chart, what weather conditions would be contained in an unshaded area that is outlined by a smooth line?

Answer 75

Ceiling between 1,000 and 3,000 feet and or visibility between 3 and 5 miles.

Question 76

A weather depiction chart is useful to a pilot in determining

Answer 76

Areas where weather conditions were reported above or below VFR minimums.

Question 77

On a weather depiction chart what does this information mean?

Answer 77

Visibility 2 miles, sky obscured,fog, cloud layer at 20,000 feet.

Question 78

What is the status of the front that extends from Nebraska through the upper Peninsula of Michigan?

Answer 78

Cold.

Question 79

The IFR weather in northern Texas is due to

Answer 79

Fog.

Question 80

The marginal weather in central Kentucky is due to low

Answer 80

Ceiling.

Question 81

What is the top for precipitation of the radar return?

Answer 81

24,000 feet MSL.

Question 82

What type of weather is occurring in the radar return? (area B)

Answer 82

Continuous rain.

Question 83

The top of the precipitation of the cell is (area E)

Answer 83

16,000 feet MSL.

Question 84

What does the heavy dashed line that forms a rectangle box on a radar summary chart refer to?

Answer 84

Severe weather watch area.

Question 85

A radar summary chart can be very helpful to a pilot because it graphically displays

Answer 85

The intensity and movement of precipitation.

Question 86

Determine the wind and temperature aloft forecast for MKC at 6,000 feet.

Answer 86

200° true at 6 knots, temperature +3°C.

Question 87

Interpret the weather symbol depicted in Utah on the 12 hour significant weather prognostic chart.

Answer 87

Moderate turbulence, surface to 18,000 feet.

Question 88

What weather is forecast for the Florida area just ahead of the stationary front during the first 12 hours?

Answer 88

Ceiling 1,000 to 3,000 feet and or visibility 3 to 5 miles with continuous precipitation.

Question 89

The enclosed shaded area associated with the low pressure system over northern Utah is forecast to have

Answer 89

Continuous snow.

Question 90

At what altitude is the freezing level over the middle of Florida on the 12 hour significant prognostic chart?

Answer 90

12,000 feet.

Question 91

What percent coverage of severe thunderstorms is forecast to occur in the area of moderate risk in northern central United States?

Answer 91

6 to 10.

Question 92

The right panel on the severe weather outlook chart indicates

Answer 92

Forecast severe thunderstorms areas

Question 93

What is the expected duration of an individual microburst?

Answer 93

Seldom longer than 15 minutes from the time the burst strikes the ground until dissipation.

Question 94

Maximum downdrafts in a microburst encounter may be as strong as

Answer 94

6,000 feet per minute.

Question 95

How long do the maximum intensity winds last in an individual microburst?

Answer 95

2 to 4 minutes.

Question 96

The position of fronts and pressure systems (as of chart time) is best determined by referring to a

Answer 96

Surface analysis chart

Question 97

All ATC facilities using radar whether processors with the ability to determine precipitation intensity will describe the intensity as

Answer 97

Light, moderate, heavy, or extreme.

Question 98

If an area on a convective outlook chart is labeled APCHG this indicates

Answer 98

Winds greater than or equal to 35 knots but less then 50 knots.