Chapter 14- Icing

Question 1

42.30.2

Explain the following processes: (a) deposition;

Answer 1

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Question 2

42.30.2

Explain the following processes: (b) sublimation.

Answer 2

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Question 3

42.30.4
Describe the processes involved when water changes to ice through the unstable
supercooled stage to the stable solid state.

Answer 3

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Question 4

42.30.6
Explain the importance of heat energy (expressed in joules) in the process of changing
the temperature of water, and changing the state of water.

Answer 4

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Question 5

42.30.8
Explain the sequence of events when supercooled water is disturbed by an aircraft in
flight.

Answer 5

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Question 6

42.30.10

Describe the formation and characteristics of: (a) soft hail or graupel;

Answer 6

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Question 7

42.30.10

Describe the formation and characteristics of: (b) snow pellets.

Answer 7

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Question 8

42.30.12
Explain the effect on the height of the freezing level when stable saturated air or
unstable saturated air is lifted orographically.

Answer 8

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Question 9

42.30.14

State the: (a) potential for ice accretion in the 10 main cloud types and in lenticular cloud;

Answer 9

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Question 10

42.30.14

State the: (b) type of ice to be expected in each cloud type;

Answer 10

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Question 11

42.30.14
State the: (c) height bands relative to the freezing level where clear or rime ice can be
expected in each cloud type.

Answer 11

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Question 12

42.30.16

Identify the associated symbol indicating; (a) light icing;

Answer 12

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Question 13

42.30.16

Identify the associated symbol indicating; (b) moderate icing;

Answer 13

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Question 14

42.30.16

Identify the associated symbol indicating; (c) severe icing.

Answer 14

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