MET - Icing

What is ice defined as?

• solid water

• vapour water

• liquid water

When liquid water cools below 0 degrees without changing state it is called ____.

• ice

• snow

• supercooled

• freezing ice

When would 'latent heat of fusion' be released?

• liquid to ice

• ice to liquid

• ice to vapour

• liquid to vapour

The colder the supercooled water droplet, the _________.

• faster it will change to vapour upon disturbance

• slower it will change to vapour upon disturbance

• faster it will change to ice upon disturbance

• slower it will change to ice upon disturbance

What type of icing is 'freezing rain'?

• Engine Icing

• Airframe Icing

What is the risk of airframe icing with snow and hail?

• Nil

• Light

• Medium

• Severe

What temperatures is clear ice generally found between?

• 0 to -15º

• 0 to -30º

• 10 to -15º

• -15º and below

What ice appears glass-like?

• clear ice

• rime ice

• hoar frost

• wake ice

Where is there the greatest risk of getting clear ice?

• CU cloud, FZL to 7,000ft above FZL

• ST cloud, FZL to 7,000ft above FZL

• CU cloud, 7,000ft above FZL and higher

• ST cloud, 7,000ft above FZL and higher

Which type of ice is described:

Not easily noticed, can block pitot and static vents and sometimes form on hinge lines of flying controls making them unusable.

• clear ice

• hoar frost

• rime ice

• hail