MET Q14 - Low Level Wind

Question 1

A METAR for Paris on a sunny afternoon gave the surface wind at 260/20. Wind at 2000ft is most likely to be:
Select one:

a.230/40

b.230/10

c.290/40

d.290/10

Answer 1

c.290/40

Question 2

What is the Bora?
Select one:

a.Cold katabatic wind over the Adriatic

b.Warm anabatic wind blowing to the Mediterranean

c.Northerly wind blowing from the Mediterranean

d.An anabatic wind in the Rockies

Answer 2

a.Cold katabatic wind over the Adriatic

Question 3

For an aircraft what are the meteorological dangers associated with a Harmattan wind?
Select one:

a.Hail

b.Thunderstorms

c.Dust and poor visibility

d.Sand up to FL200

Answer 3

c.Dust and poor visibility

Question 4

If you fly with left drift in the northern hemisphere, what is happening to surface pressure?
Select one:

a.Stays the same

b.Cannot tell

c.Decreasing

d.Increasing

Answer 4

d.Increasing

Question 5

Which of the following is an example of a Foehn wind?
Select one:

a.Chinook

b.Scirocco

c.Bora

d.Harmattan

Answer 5

a.Chinook

Question 6

In the northern hemisphere the wind at the surface blows
Select one:

a.anti-clockwise around, and away from the centre of, a high pressure

b.clockwise around, and away from the centre of, a low pressure area

c.anti-clockwise around, and towards the centre of, a low pressure area

d.from a low pressure area to a high pressure area

Answer 6

c.anti-clockwise around, and towards the centre of, a low pressure area

Question 7

A katabatic wind can be described as
Select one:

a.A mountain wind flowing uphill during the night

b.A mountain wind flowing uphill during daytime

c.A mountain wind flowing downhill during daytime

d.A mountain wind flowing downhill during the night

Answer 7

d.A mountain wind flowing downhill during the night

Question 8

Why does the wind speed increase through valleys and/or around headlands?
Select one:

a.Due to the increase in air temperature

b.Due to the venturi effect

c.Due to the increase in humidity

d.Due to anabatic winds

Answer 8

b.Due to the venturi effect

Question 9

A high pressure area covers part of the Mediterranean Sea and coastal region during summer. What surface wind direction is likely at an airport by the coast on a sunny afternoon?
Select one:

a.Variable

b.Sea to land

c.Parallel to the coastline

d.Land to sea

Answer 9

b.Sea to land

Question 10

What causes the geostrophic wind to be stronger than the gradient wind around a low?
Select one:

a.Coriolis force adds to the gradient force

b.Coriolis force opposes the centrifugal force

c.Centrifugal force opposes the gradient force

d.Centrifugal force adds to the gradient force

Answer 10

c.Centrifugal force opposes the gradient force