Thunderstorm and Icing

Question 1

What visible signs indicate extreme turbulence in thunderstorms?

Answer 1

Cumulonimbus clouds, very frequent lightning, and roll clouds.

Question 2

What feature is normally associated with the cumulus stage of a thunderstorm?

Answer 2

Continuous updraft

Question 3

The conditions necessary for the formation of cumulonimbus clouds are a lifting action and

Answer 3

unstable, moist air.

Question 4

The most severe weather conditions, such as destructive winds, heavy hail, and tornadoes, are
generally associated with

Answer 4

squall lines.

Question 5

Of the following, which is accurate regarding turbulence associated with thunderstorms?

Answer 5

Outside the cloud, shear turbulence can be encountered 20 miles laterally from a severe storm.

Question 6

Which statement is true concerning squall lines?

Answer 6

They offer the most Intense weather hazards to aircraft

Question 7

Which statement is true regarding squall lines?

Answer 7

They are nonfrontal and often contain severe, steady-state thunderstorms.

Question 8

Select the true statement pertaining to the life cycle of a thunderstorm.

Answer 8

The beginning of rain at the Earth’s surface indicates the mature stage of the thunderstorm.

Question 9

Which is true regarding the use of airborne weather-avoidance radar for the recognition of certain weather conditions?

Answer 9

The radarscope provides no assurance of avoiding instrument weather conditions.

Question 10

Which weather phenomenon signals the beginning of the mature stage of a thunderstorm?

Answer 10

The start of rain.

Question 11

During the life cycle of a thunderstorm, which stage is characterized predominately by downdrafts?

Answer 11

Dissipating.

Question 12

hat minimum distance should exist between intense radar echoes before any attempt is made to fly between these thunderstorms?

Answer 12

40 miles.

Question 13

Which situation would most likely result in

freezing precipitation? Rain falling from air which has a temperature of

Answer 13

more than 32°F into air having a temperature of 328F or less.

Question 14

If airborne radar is indicating an extremely intense thunderstorm echo, this thunderstorm should be avoided by a distance of at least

Answer 14

20 miles.

Question 15

Which statement is true concerning the hazards of hail?

Answer 15

Hailstones may be encountered in clear air several miles from a thunderstorm.

Question 16

Hail is most likely to be associated with

Answer 16

cumulonimbus clouds.

Question 17

Ice pellets encountered during flight normally are evidence that

Answer 17

a warm front is about to pass.

Question 18

Ice pellets encountered during flight are normally evidence that

Answer 18

Freezing rain exists at higher altitude.

Question 19

What is indicated if ice pellets are encountered at 8,000 feet?

Answer 19

Freezing rain at higher altitude.