11823046
Beschreibung
Quiz von Jose Antonio Vazquez, aktualisiert more than 1 year ago
|
Erstellt von Jose Antonio Vazquez
vor fast 7 Jahre
|
|
Frage 1
Frage
1- On a day in summer with a slack pressure gradient, an airfield on the south coast of England has a surface W/V of 080/06 at dawn. The coast/line is in an East/West direction. The most probable W/V at noon would be:
Antworten
-
360/12.
-
080/18.
-
180/18.
-
080/06.
Frage 2
Frage
2- The surface wind direction in the Northern Hemisphere is backed from the 2000 ft wind by an average of 30o over land due to:
Antworten
-
Friction reducing the wind speed, thus reducing the geostrophic force, allowing the pressure gradient force to pull the wind across the isobars towards low pressure.
-
The frictional effect at the surface, causing the surface isobars to curve more than those at 2000 ft.
-
The geostrophic wind only flowing between straight and parallel isobars with an unchanging pressure gradient with time, whereas the surface pressure gradient changes diurnally with surface heating.
-
The effect of the cyclostrophic force, which is strongest at the surface due to increased curvature.
Frage 3
Frage
3- When a Fohn wind occurs:
Antworten
-
There are unstable conditions on the downwind side of the mountain.
-
Air is cooled mainly at the DALR on the upwind side of the mountain and is heated at the SALR on the downwind side.
-
Windspeed must be at least 15 kt at the surface increasing with height and maintaining direction.
-
Air is cooled mainly at the SALR on the upwind side of the mountain and is heated mainly at the DALR on the downwind side.
Frage 4
Frage
4- The geostrophic wind blows:
Antworten
-
Parallel to curved isobars.
-
When pressure values are changing rapidly.
-
In a tropical revolving storm.
-
When geostrophic force and pressure gradient force are equal.
Frage 5
Frage
5- A Katabatic wind can result in:
Antworten
-
An increase in temperature.
-
Fog in the valley at night.
-
Thunderstorms in summer.
-
Stratus cloud.
Frage 6
Frage
6- A strong wind that rises suddenly, lasts for some minutes and dies comparatively suddenly away is called:
Antworten
-
A gust.
-
A squall.
-
A gale.
-
A blast.
Frage 7
Frage
7- A ravine or valley wind:
Antworten
-
Is a wind blowing at increased speed along a valley.
-
Is a wind blowing from a hill to a valley below.
-
Is a wind blowing up a hill from a valley.
-
Is a wind blowing at reduced speed along a valley.
Frage 8
Frage
8- Which of the following is true of a land breeze?
Antworten
-
it blows only at noon
-
it blows from land to water
-
it blows from water to land
-
it blows by day
Frage 9
Frage
9- What characteristics will the surface winds have in an area where the isobars on the weather map are very close together?
Antworten
-
Strong and flowing across the isobars.
-
Very weak but gusty and flowing across the isobars.
-
Moderate and flowing parallel to the isobars.
-
Strong and flowing parallel to the isobars.
Frage 10
Frage
10- Taking into account the cyclostrophic balance, what will be the intensity of wind (in km/h) if we consider a vortex in rotation of 100 m radius with a variation of 4 hPa per 100 m? (You should consider 1.225 kg/m3 as the density of the air).
Antworten
-
200 km/h.
-
175 km/h.
-
150 km/h.
-
65 km/h.
Möchten Sie mit GoConqr kostenlos Ihre eigenen Quiz erstellen? eigenen Mehr erfahren.