Weather Hazards

Question 1

What are the four levels of turbulence intensity?

Answer 1

a. Light
b. Moderate
c. Severe
d. Extreme

Question 2

What are the four classifications of turbulence?

Answer 2

a. Thermal
b. Mechanical
c. Frontal
d. Wind shear

Question 3

What type of frontal activity is likely to produce the most turbulence?

Answer 3

Fast-moving cold front

Question 4

What type of icing is found in cumuliform clouds and unstable conditions?

Answer 4

Clear icing

Question 5

What type front produces the most significant icing conditions?

Answer 5

Occluded front

Question 6

What are the greatest hazards associated with induction and compressor icing?

Answer 6

Reduced airflow and FOD

Question 7

What conditions are necessary for the formation of aircraft icing?

Answer 7

Visible moisture and temperatures between 0° and -20° C

Question 8

Define slant range visibility.

Answer 8

The distance on final approach at which the runway environment is in sight

Question 9

What is the minimum sky coverage constituting a ceiling?

Answer 9

5/8 (Broken) or a total obscuration

Question 10

True or false: Advection fog is dissipated by solar heating.

Answer 10

False. The fog layer is usually too thick for solar heating to be effective.

Question 11

If an aircraft encounters an ash cloud in flight, what is the best procedure for the pilot to use to escape

the cloud?

Answer 11

Execute 180° turn

Question 12

What category of turbulence is characterized by large variations in airspeed and abrupt changes in attitude and altitude?

Answer 12

Severe turbulence

Question 13

Turbulence occurring less than 1⁄3 of the time is described as ______.

Answer 13

Occasional

Question 14

Moderate turbulence can extend as far as ______ miles downwind of a mountain wave.

Answer 14

300

Question 15

What are the three types of wind shear turbulence?

Answer 15

Jet stream, gusty winds, temperature inversion

Question 16

What are the two types of engine icing?

Answer 16

Compressor and induction icing

Question 17

True or false: Induction icing requires visible moisture and sub-freezing temperatures.

Answer 17

False. Induction icing is a result of lower inlet pressures, and can occur in clear air and temperature as high as 10°.

Question 18

True or false? When finding yourself in icing conditions, you can escape by flying into areas of colder temperatures.

Answer 18

True. At lower temperatures precipitation is already frozen and aircraft icing is not a hazard.

Question 19

At what intensity of icing is rate of accumulation a problem if encountered for an extended period of time?

Answer 19

Light

Question 20

Total visibility over half the horizon circle or greater is ______.

Answer 20

Prevailing visibility

Question 21

______ is the distance that be seen directly upward from the ground into a surface-based obscuration

Answer 21

Vertical visibility (VV)

Question 22

Which type of fog produces a thicker, more persistent layer?

Answer 22

Advection