WEATHER QUIZ 1

Question 1

Freezing rain encountered during a climb is usually indicative of what?
A layer of warmer air above. Rain or drizzle always forms in temperatures above freezing. Rain or drizzle falling thru colder air may become super cooled, freezing on impact as freezing rain
A layer of warmer air above. Rain or drizzle always forms in temperatures above freezing. Rain or drizzle falling thru warmer air may become super cooled, freezing on impact as freezing rain.
A layer of colder air above. Rain or drizzle always forms in temperatures above freezing. Rain or drizzle falling thru colder air may become super cooled, freezing on impact as freezing rain.

Answer 1

A layer of warmer air above. Rain or drizzle always forms in temperatures above freezing. Rain or drizzle falling thru colder air may become super cooled, freezing on impact as freezing rain

Question 2

What shows up best on radar? Rain, Wet Hail, Sleet, Snow.
  Sleet.
  Snow.
  Wet Hail.
  Rain.

Answer 2

Wet Hail.

Question 3

After passing through into a cold front, will atmospheric pressure typically increase or decrease?
remain the same
When crossing a front directly into colder air, the pressure will usually drop
When crossing a front directly into colder air, the pressure will usually rise

Answer 3

When crossing a front directly into colder air, the pressure will usually rise

Question 4

In what condition will snowflakes form?
By sublimation in below freezing temperatures.
By kinetic cooling in below freezing temperatures.
By sublimation in above freezing temperatures.

Answer 4

By sublimation in below freezing temperatures.

Question 5

What is the definition of wind shear?
Any rapid change in wind direction or velocity which causes airspeed changes greater than 8 knots or vertical speed changes greater than 500 feet per minute.
Any rapid change in wind direction or velocity which causes airspeed changes greater than 15 knots or vertical speed changes greater than 500 feet per minute.
Any rapid change in wind direction or velocity which causes airspeed changes greater than 5 knots or vertical speed changes greater than 500 feet per minute.
Correct

Answer 5

Any rapid change in wind direction or velocity which causes airspeed changes greater than 15 knots or vertical speed changes greater than 500 feet per minute.

Question 6

Are METAR winds reported in relation to magnetic or true north?
It depends on the station.
True north.
Magnetic North.

Answer 6

True north.

Question 7

Describe advection fog.
Forms day or night as a result of dry air moving over a cold surface.
Forms day or night as a result of moist air moving over a cold surface.
Forms day or night as a result of moist air moving over a hot surface.

Answer 7

Forms day or night as a result of moist air moving over a cold surface.

Question 8

Describe radiation fog…
High humidity during the early evening Cool cloudless nights with strong winds Favorable topography
High humidity during the early evening Cool cloudless nights with light winds Favorable topography
Low humidity during the early evening Cool cloudless nights with light winds Favorable topography

Answer 8

High humidity during the early evening Cool cloudless nights with light winds Favorable topography

Question 9

Squall lines are typically found ahead of cold or warm fronts?
Typically associated with cold fronts. However, squall lines can form during the summer month as far as 200 miles in advance of a severe cold front.
Typically associated with warm fronts. However, squall lines can form during the summer month as far as 200 miles in advance of a severe cold front.

Answer 9

Typically associated with cold fronts. However, squall lines can form during the summer month as far as 200 miles in advance of a severe cold front.

Question 10

What is the definition of severe icing?
When the rate of ice accumulation on an aircraft is such that de-icing/anti-icing equipment fails to reduce or control the hazard.
When the rate of ice accumulation on an aircraft is such that de-icing/anti-icing equipment is able to keep up but is working hard.
When the rate of ice accumulation on an aircraft is such that passengers ask flight attendants about it.

Answer 10

When the rate of ice accumulation on an aircraft is such that de-icing/anti-icing equipment fails to reduce or control the hazard.

Question 11

How far should you fly around a thunderstorm?
Avoid any thunderstorms identified as severe or giving an intense radar echo by at least 20 miles if circumnavigating or clear the top of the storm by 5000 feet for every 10 knots of wind speed at the top of the storm if flying over the top.
Avoid any thunderstorms identified as severe or giving an intense radar echo by at least 50 miles if circumnavigating or clear the top of the storm by 1000 feet for every 10 knots of wind speed at the top of the storm if flying over the top.
Avoid any thunderstorms identified as severe or giving an intense radar echo by at least 20 miles if circumnavigating or clear the top of the storm by 1000 feet for every 10 knots of wind speed at the top of the storm if flying over the top.

Answer 11

Avoid any thunderstorms identified as severe or giving an intense radar echo by at least 20 miles if circumnavigating or clear the top of the storm by 1000 feet for every 10 knots of wind speed at the top of the storm if flying over the top.

Question 12

Mountain waves can produce stationary cloud group of rotor clouds and standing lenticular clouds. Pick one of the two, which are usually found at lower altitudes?
Rotor clouds are likely to be the lowest.
Standing lenticular.

Answer 12

Rotor clouds are likely to be the lowest.

Question 13

What is a microburst? What is a dry microburst?
Microbursts are small-scale intense downdrafts which, on reaching the surface, spread inward in limited directions from the downdraft center. A dry microburst often generates a ring of dust on the surface. A microburst is defined if damaging winds extend to 2.2 miles or less horizontally.
Microbursts are small-scale intense updrafts which, on reaching the surface, spread outward in all directions from the downdraft center. A dry microburst often generates a ring of dust on the surface. A microburst is defined if damaging winds extend to 2.2 miles or less horizontally.
Microbursts are small-scale intense downdrafts which, on reaching the surface, spread outward in all directions from the downdraft center. A dry microburst often generates a ring of dust on the surface. A microburst is defined if damaging winds extend to 2.2 miles or less horizontally.

Answer 13

Microbursts are small-scale intense downdrafts which, on reaching the surface, spread outward in all directions from the downdraft center. A dry microburst often generates a ring of dust on the surface. A microburst is defined if damaging winds extend to 2.2 miles or less horizontally.

Question 14

What are the parameters that define wind shear?
Wind shear is defined as “any rapid change in wind direction or velocity.” Severe wind shear is defined as a rapid change in wind direction or velocity causing air speed changes greater than 20 knots or vertical speed changes greater than 500 feet per minute.
Wind shear is defined as “any rapid change in wind direction or velocity.” Severe wind shear is defined as a rapid change in wind direction or velocity causing air speed changes greater than 15 knots or vertical speed changes greater than 1000 feet per minute.
Wind shear is defined as “any rapid change in wind direction or velocity.” Severe wind shear is defined as a rapid change in wind direction or velocity causing air speed changes greater than 15 knots or vertical speed changes greater than 500 feet per minute.

Answer 14

Wind shear is defined as “any rapid change in wind direction or velocity.” Severe wind shear is defined as a rapid change in wind direction or velocity causing air speed changes greater than 15 knots or vertical speed changes greater than 500 feet per minute.

Question 15

A process of cooling the air through expansion is better known as…
Adiabatic cooling.
Adiabatic warming
kinetic cooling

Answer 15

Adiabatic cooling.

Question 16

How can the stability of the atmosphere be determined?
The best indication of the stability or instability of an air mass is the ambient moisture.
The best indication of the stability or instability of an air mass is the pressure rate.
The best indication of the stability or instability of an air mass is the ambient temperature lapse rate.

Answer 16

The best indication of the stability or instability of an air mass is the ambient temperature lapse rate.

Question 17

What percentage of cloud cover is scattered?
Scattered (SCT) is defined as 3/8 to 4/8 coverage.
Scattered (SCT) is defined as 1/3 to 3/8 coverage.
Scattered (SCT) is defined as 1/2 to 4/8 coverage.

Answer 17

Scattered (SCT) is defined as 3/8 to 4/8 coverage.

Question 18

Where can the maximum hazard zone caused by wind shear associated with a thunderstorm be found?
Upwind side and directly under the thunderstorm.
On all sides and directly under the thunderstorm.
East side and directly under the thunderstorm.

Answer 18

On all sides and directly under the thunderstorm.

Question 19

CAT is best predicted where horizontal wind shear exceeds what values?
  Exceeds10 knots per 150 NM.
  Exceeds 20 knots per 40NM.
  Exceeds15 knots per 150 NM.
  Exceeds 40 knots per 150 NM.

Answer 19

Exceeds 40 knots per 150 NM.

Question 20

What is the worst icing condition?
Freezing hail.
Freezing Fog.
Freezing Rain (FZRA) and Freezing Drizzle (FZDZ).

Answer 20

Freezing Rain (FZRA) and Freezing Drizzle (FZDZ).

Question 21

You experience wind shear on final, what is the best course of action?
Decrease pitch attitude, increase power to the maximum available and accept lower than normal airspeed indications. If this does not arrest the descent, the pilot should continue to pitch up until the descent stops or until the “stick shaker” is encountered.
Maintain or increase pitch attitude, decrease power to the maximum available and accept lower than normal airspeed indications. If this does not arrest the descent, the pilot should continue to pitch up until the descent stops or until the “stick shaker” is encountered.
Maintain or increase pitch attitude, increase power to the maximum available and accept lower than normal airspeed indications. If this does not arrest the descent, the pilot should continue to pitch up until the descent stops or until the “stick shaker” is encountered.

Answer 21

Maintain or increase pitch attitude, increase power to the maximum available and accept lower than normal airspeed indications. If this does not arrest the descent, the pilot should continue to pitch up until the descent stops or until the “stick shaker” is encountered.

Question 22

Winds aloft are 270/20, they shift to 210/15, have you experienced frontal passage?
Yes, even though shifts are usually to the right after passage.
No, even though shifts are usually to the right after passage.

Answer 22

Yes, even though shifts are usually to the right after passage.

Question 23

What are the dynamics of a low pressure system?
Air flows from areas of high pressure into areas of low pressure because air always seeks out lower pressure. In the northern hemisphere, the air flows toward a low and is deflected to create a counterclockwise or cyclonic circulation. The air flows into a high pressure area to replace rising air this air tends to be unstable, and usually brings increasing cloudiness and precipitation.
Air flows from areas of high pressure into areas of low pressure because air always seeks out lower pressure. In the northern hemisphere, the air flows toward a low and is deflected to create a counterclockwise or cyclonic circulation. The air flows into a low-pressure area to replace rising air this air tends to be unstable, and usually brings increasing cloudiness and precipitation.
Air flows from areas of low pressure into areas of low pressure because air always seeks out lower pressure. In the northern hemisphere, the air flows toward a low and is deflected to create a counterclockwise or cyclonic circulation. The air flows into a low pressure area to replace rising air this air tends to be unstable, and usually brings increasing cloudiness and precipitation.

Answer 23

Air flows from areas of high pressure into areas of low pressure because air always seeks out lower pressure. In the northern hemisphere, the air flows toward a low and is deflected to create a counterclockwise or cyclonic circulation. The air flows into a low-pressure area to replace rising air this air tends to be unstable, and usually brings increasing cloudiness and precipitation.

Question 24

What type of weather report would you find CAT on?
Clear Air Turbulence Forecast – CAT (1 and 3 hrs. US Forecast).
Clear Air Turbulence Forecast – CAT (3 and 6 hrs. US Forecast).
Clear Air Turbulence Forecast – CAT (8 and 10 hrs. US Forecast).

Answer 24

Clear Air Turbulence Forecast – CAT (3 and 6 hrs. US Forecast).

Question 25

Define a mountain wave.
Mountain wave occurs when air is blown over a mountain range or ridge of a sharp bluff. Generally requires winds of 30 knots or greater but may occur with winds as little as 15 knots. Creates strong updrafts/ downdrafts on lee side which can cause turbulence up to 700 miles downrange. May form lenticular clouds over peaks.
Mountain wave occurs when air is blown over a mountain range or ridge of a sharp bluff. Generally requires winds of 30 knots or greater but may occur with winds as little as 3 knots. Creates strong updrafts/ downdrafts on lee side which can cause turbulence up to 700 miles downrange. May form lenticular clouds over peaks.
Mountain wave occurs when air is blown over a mountain range or ridge of a sharp bluff. Generally requires winds of 5 knots or greater but may occur with winds as little as 15 knots. Creates strong updrafts/ downdrafts on lee side which can cause turbulence up to 700 miles downrange. May form lenticular clouds over peaks.

Answer 25

Mountain wave occurs when air is blown over a mountain range or ridge of a sharp bluff. Generally requires winds of 30 knots or greater but may occur with winds as little as 15 knots. Creates strong updrafts/ downdrafts on lee side which can cause turbulence up to 700 miles downrange. May form lenticular clouds over peaks.

Question 26

CAT associated with mountain waves can extend how high?
10,000 feet above the tropopause and can travel 100 or more miles downwind from the mountains.
15,000 feet above the tropopause and can travel 100 or more miles downwind from the mountains.
5,000 feet above the tropopause and can travel 100 or more miles downwind from the mountains.

Answer 26

5,000 feet above the tropopause and can travel 100 or more miles downwind from the mountains.

Question 27

With regards to visibility on a METAR, what values are used to differentiate Fog (FG) and Mist (BR)?
Fog (FG) is used to indicate fog restricting visibility to less than 5/8 SM. BR is used from 1/2M
Fog (FG) is used to indicate fog restricting visibility to less than 5/8 SM. BR is used from 5/8 SM to 6SM.
Fog (FG) is used to indicate fog restricting visibility to less than 1/2 SM. BR is used from 5/8 SM to 6SM.

Answer 27

Fog (FG) is used to indicate fog restricting visibility to less than 5/8 SM. BR is used from 5/8 SM to 6SM.

Question 28

What is a characteristic of a low pressure system?
Unstable and usually brings increasing cloudiness and precipitation.
Unstable and usually brings increasing great visibility and clear sky.
Stable and usually brings increasing cloudiness and precipitation.

Answer 28

Unstable and usually brings increasing cloudiness and precipitation.

Question 29

What kind of winds are associated with a warm front?
Warm fronts move slowly. Generally the winds in a warm front are from 10-25 mph as opposed to cold. Fronts which move much more quickly and experience wind gusts from 25-35 mph.
Warm fronts are fast moving. Generally the winds in a warm front are from 10-25 mph as opposed to cold.

Answer 29

Warm fronts move slowly. Generally the winds in a warm front are from 10-25 mph as opposed to cold. Fronts which move much more quickly and experience wind gusts from 25-35 mph.

Question 30

You are at 25,000ft, there is Level 5 thunderstorm 80 miles in front of you. You tilt your radar up 1.5 deg and the cell disappears. How high is the Thunderstorm cell?
34,000ft approximately.
35,000ft approximately.
37,000ft approximately.

Answer 30

37,000ft approximately.

Question 31

Temperature = 58 and Dew Point = 55, what could happen if temperature drops?
When the temperature of the air is reduced to the dew point, the air is not saturated and moisture beings to condense out of the air in form of fog, dew, frost, clouds, rain, hail or snow.
When the temperature of the air is reduced to the pressure point, the air is completely saturated and moisture beings to condense out of the air in form of fog, dew, frost, clouds, rain, hail or snow.
When the temperature of the air is reduced to the dew point, the air is completely saturated and moisture beings to condense out of the air in form of fog, dew, frost, clouds, rain, hail or snow.

Answer 31

When the temperature of the air is reduced to the dew point, the air is completely saturated and moisture beings to condense out of the air in form of fog, dew, frost, clouds, rain, hail or snow.

Question 32

What are ATIS and METAR winds listed in: mag or true?
Both METAR and ATIS are True.
METAR magnetic/ ATIS True.
METAR True/ ATIS magnetic.

Answer 32

METAR True/ ATIS magnetic.

Question 33

Which precipitation type usually indicates freezing rain at higher altitude?
Snow always indicates freezing rain.
Ice Pellets always indicate freezing rain at higher altitude.
Mixed sleet.
Wet rain at higher altitudes.

Answer 33

Ice Pellets always indicate freezing rain at higher altitude.
Mixed sleet.

Question 34

In level flight, you encounter icing conditions and you know your pitot heat is not working, what do you do?
Either descend or climb but get out of icing conditions immediately. A completely blocked pitot tube due to an inoperative heater will cause the airspeed indicator to function like an altimeter.
Only a descent will help the condition. A completely blocked pitot tube due to an inoperative heater will cause the airspeed indicator to function a VSI.
Continue and increase speed.

Answer 34

Either descend or climb but get out of icing conditions immediately. A completely blocked pitot tube due to an inoperative heater will cause the airspeed indicator to function like an altimeter.

Question 35

What conditions are conducive to the formation of frost on an airplane?
Clear night, 50°F, Light winds, no precipitation. The temperature of the surface is at or below the dew point of the adjacent air and the dew point is below freezing.
Clear night, 50°F, Light winds, no precipitation. The temperature of the surface is at or below the dew point of the adjacent air and the dew point is above freezing.
Clear night, 30°F, Light winds, no precipitation. The temperature of the surface is at or below the dew point of the adjacent air and the dew point is below freezing.

Answer 35

Clear night, 30°F, Light winds, no precipitation. The temperature of the surface is at or below the dew point of the adjacent air and the dew point is below freezing.

Question 36

Does warm air hold more or less water vapor than cold air?
warmer air holds less water vapor.
Warmer air holds more water vapor.

Answer 36

Warmer air holds more water vapor.