Facts 2

Question 1

What happens during the Venturi effect

Answer 1

The effect lowers the atmospheric pressure over the mountain tops and increases the altimeters indicated altitude so true altitude decreases

Question 2

Mean height of the equatorial tropopause in jan

Answer 2

56,000ft

Question 3

Units for high level wind

Answer 3

Kts + degrees/true

Question 4

Where do you get easterly winds

Answer 4

20N to 0.5S

Question 5

At the same level as the jet core what is the temp

Answer 5

Th same as the temp in the cold air

Question 6

Snow grains fall from

Answer 6

Stratus or supercooled fog

Question 7

Difference between polar lows and thermal lows

Answer 7

Polar only forms over the sea, thermal forms over both land and sea

Question 8

The trade winds blow between

Answer 8

Horse lats and the doldrums

Question 9

Mediterranean climate

Answer 9

Warm dry summers, warm wet winters with annual rainfall below 700mm

Question 10

Where is a squall line mostly encounted

Answer 10

Ahead of the cold front

Question 11

Duration of a microburst

Answer 11

1 to 5 min

Question 12

Below 20,000ft horizontal distance for avoiding ts

Answer 12

5,000ft and 10nm

Question 13

Type of thunderstorm most common in the summer in mod lats

Answer 13

Airmass ts

Question 14

How long is a trend valid for

Answer 14

2 hrs

Question 15

When is vertical vis reported

Answer 15

When ever the sky is obscured by fog/heavy rain and the height of these cloud cannot be measured

Question 16

What measures RH

Answer 16

Hygrometer