Meteorology Quiz 2

Question 1) Small water droplets that are super-cooled below 0°C are likely to form which type of icing?

Clear Ice

Hoar Frost

Dry Ice

Rime Ice

Correct! Wrong!

Small super-cooled droplets will freeze on impact with a cold surface and create rime ice. Bigger super-cooled droplets will create clear ice due to the droplet gradually flowing back over the surface.

Question 2) In a METAR or TAF ‘BKN035’ means:

4 to 6 oktas of cloud at 3500ft above the aerodrome

5 to 7 oktas of cloud at 3500ft above sea level

5 to 7 oktas of cloud at 3500ft above the aerodrome

3 to 4 oktas of cloud at FL035

Correct! Wrong!

Clouds in METAR and TAF are always given in height above aerodrome level and in hundred’s of feet. The sky is divided into 8 sectors or oktas: 1 – 2 oktas are few clouds (FEW), 3 – 4 oktas are scattered (SCT), 5 – 7 oktas are broken (BKN), 8 oktas is overcast (OVC).

Question 3) A fog which can develop over land or sea by both day and night is:

Sea smoke

Frontal fog

Radiation fog

Advection fog

Correct! Wrong!

Advection fog occurs when warm air flows across a relatively colder surface, whilst radiation fog occurs when still warm air gets cooled form below.

Question 4) The service in which meteorological reports and trends for a number of selected aerodromes are broadcast continuously on a discrete VHF frequencies is called:

METAR

TAF

VOLMET

ATIS

Correct! Wrong!

METAR, TAF and ATIS information are specific to an aerodrome, whilst VOLMET includes ATIS information for a number of aerodromes.