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10. Wind

Jose Antonio Vazquez 10 Fragen 5,0 (3 Bewertungen)

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Fragen in diesem Quiz (10)

  1. 11- 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:
    1. A360/12.
    2. B080/18.
    3. C180/18.
    4. D080/06.
  2. 22- The surface wind direction in the Northern Hemisphere is backed from the 2000 ft wind by an average of 30o over land due to:
    1. AFriction reducing the wind speed, thus reducing the geostrophic force, allowing the pressure gradient force to pull the wind across the isobars towards low pressure.
    2. BThe frictional effect at the surface, causing the surface isobars to curve more than those at 2000 ft.
    3. CThe 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.
    4. DThe effect of the cyclostrophic force, which is strongest at the surface due to increased curvature.
  3. 33- When a Fohn wind occurs:
    1. AThere are unstable conditions on the downwind side of the mountain.
    2. BAir is cooled mainly at the DALR on the upwind side of the mountain
      and is heated at the SALR on the downwind side.
    3. CWindspeed must be at least 15 kt at the surface increasing with height
      and maintaining direction.
    4. DAir is cooled mainly at the SALR on the upwind side of the mountain and is heated mainly at the DALR on the downwind side.
  4. 44- The geostrophic wind blows:
    1. AParallel to curved isobars.
    2. BWhen pressure values are changing rapidly.
    3. CIn a tropical revolving storm.
    4. DWhen geostrophic force and pressure gradient force are equal.
  5. 55- A Katabatic wind can result in:
    1. AAn increase in temperature.
    2. BFog in the valley at night.
    3. CThunderstorms in summer.
    4. DStratus cloud.
  6. 66- A strong wind that rises suddenly, lasts for some minutes and dies comparatively suddenly away is called:
    1. AA gust.
    2. BA squall.
    3. CA gale.
    4. DA blast.
  7. 77- A ravine or valley wind:
    1. AIs a wind blowing at increased speed along a valley.
    2. BIs a wind blowing from a hill to a valley below.
    3. CIs a wind blowing up a hill from a valley.
    4. DIs a wind blowing at reduced speed along a valley.
  8. 88- Which of the following is true of a land breeze?
    1. Ait blows only at noon
    2. Bit blows from land to water
    3. Cit blows from water to land
    4. Dit blows by day
  9. 99- What characteristics will the surface winds have in an area where the isobars on the weather map are very close together?
    1. AStrong and flowing across the isobars.
    2. BVery weak but gusty and flowing across the isobars.
    3. CModerate and flowing parallel to the isobars.
    4. DStrong and flowing parallel to the isobars.
  10. 1010- 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).
    1. A200 km/h.
    2. B175 km/h.
    3. C150 km/h.
    4. D65 km/h.

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Beschreibung
Tema 1 Meteo Quiz am 10. Wind, erstellt von Jose Antonio Vazquez am 30/12/2017.
Sprache
Español
Aufrufe
336
Schlagwörter
windmeteotema 1
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