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M&F - 9, 10, 11 y 12.

Beschreibung

Quiz am M&F - 9, 10, 11 y 12., erstellt von Oscar F. de Celis am 06/01/2020.
Oscar F. de Celis
Quiz von Oscar F. de Celis, aktualisiert more than 1 year ago
Oscar F. de Celis
Erstellt von Oscar F. de Celis vor mehr als 4 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
TEMA 9: 1. An air mass that has travelled over an ocean is known as:
Antworten
  • Continental air and gas a high humidity.
  • Continental air and has a low humidity.
  • Maritime air and has a high humidity.
  • Maritime air and has a low humidity.

Frage 2

Frage
2. Charasteristic weather associated with a Pm airmass transmitting Europe in summer would include:
Antworten
  • Widespread Cu and Cb activity overland during the day.
  • Clear quiet settled weather overland by day with good visibility.
  • Warm moist conditions with some Sc or Cu and moderate to poor visibility.
  • Extensive low stratus cloud giving drizzle to light rain overland by day.

Frage 3

Frage
3. With a cold occlusion:
Antworten
  • The air ahead of the warm front is colder than the air behind the cold front.
  • The warm sector remains not eh surface.
  • The cloud type is predominately layer with a wide precipitation band.
  • There is a risk of CB embedded in NS.

Frage 4

Frage
4. The average upper winds at A1, B1 and C1 in Appendix 'A' are respectively:
Antworten
  • Easterly, westerly, northwesterly.
  • Northwesterly, westerly, southwesterly.
  • Southwesterly, westerly, northwesterly.
  • Southwesterly, westerly, northerly.

Frage 5

Frage
5. The average surface level winds at A3, B3 and C3 in the following figure are respectively:
Image:
Captura+De+Pantalla+2020 01 06+A+Las+12.26.27 (binary/octet-stream)
Antworten
  • Easterly, westerly, southwesterly.
  • Westerly, westerly, southwesterly.
  • Southwersterly, westerly, northwesterly.
  • Southwesterly, westerly, westerly.

Frage 6

Frage
6. If air transit is heated from below it tends to become more:
Antworten
  • Stable.
  • Neutrally stable.
  • Unstable.
  • None of this.

Frage 7

Frage
7. When a cold front passes a station in Spain:
Antworten
  • The wind veers and the temperature falls.
  • The wind backs and the temperature falls.
  • The wind veers and the temperature rises.
  • The wind backs and the temperature rises.

Frage 8

Frage
8. The front in the picture is a:
Image:
Captura+De+Pantalla+2020 01 06+A+Las+12.28.39 (binary/octet-stream)
Antworten
  • Warm occlusion.
  • Cold occlusion.
  • Warm front.
  • Cold front.

Frage 9

Frage
9. How do air masses move at a warm front?
Antworten
  • Cold air overrides a warm air mass.
  • Warm air overrides a cold air mass.
  • Cold air undercuts a warm air mass.
  • Warm air undercuts a cold air mass.

Frage 10

Frage
TEMA 10: 1. On a day in summer with a slack pressure gradient, an airfield on the south coast of England gas 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.
  • 080/12.
  • 180/12.
  • 080/06.

Frage 11

Frage
2. 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 kts 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 12

Frage
3. 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 13

Frage
4. A Katabatic wind cana result in:
Antworten
  • An increase in temperature.
  • Fog in the valley at night.
  • Thunderstorms in summer.
  • Stratus clouds.

Frage 14

Frage
5. A strong wind that rises suddenly, last for some minutes and dies comparatively suddenly away is called:
Antworten
  • A gust.
  • A squall.
  • A gale.
  • A blast.

Frage 15

Frage
6. 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 16

Frage
7. 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.
  • Ir blows by day.

Frage 17

Frage
8. 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 18

Frage
9. A point between two isobars. The pressure gradient is 1 Pa/km between them. The latitude at this point is 45ºN and the air density is 1.06 km/m3. Calculate the geostrophic wind at this point.
Antworten
  • 17 kmh.
  • 33 kmh.
  • 51 kmh.
  • 19 kmh.

Frage 19

Frage
TEMA 11: 1. Which of these cloud types can't be observed in the water vapour channel?
Antworten
  • Cumulus humilis.
  • Cumulonimbus capillatus (anvil cirrus).
  • Cirrus.
  • Cumulus humilis and cirrus.

Frage 20

Frage
2. Which of these cloud types can be viewed in the visible channel?
Antworten
  • Cirrus and cumulonimbus.
  • Cumulus.
  • Low stratus.
  • All of them.

Frage 21

Frage
3. What is the smallest distinguishable feature that can be seen in the Meteosat visible channel?
Antworten
  • 1.0 km.
  • 2.5 km.
  • 7.5 km.
  • 10.5 km.

Frage 22

Frage
4. What is the cone of silence? (Choose the best answer)
Antworten
  • The volume under the lowest elevation of the beam.
  • The volume above the highest inclination angle of the beams.
  • The volume between the lowest and highest scans in clear air mode.
  • The volume between the lowest and highest scans in precipitation mode.

Frage 23

Frage
5. In which of the following instances would precipitation often go completely unobserved by radar due to the geometry of the radar beam?
Antworten
  • A tall thunderstorm producing rain very close to the radar.
  • A tall thunderstorm producing rain about 50 km away from the radar.
  • A low, stratiform cloud producing rain near the radar's maximum unambiguous range and a thunderstorm producing rain behind a mountain located 10km from the radar.
  • None of them.

Frage 24

Frage
6. What usually doesn't constitute ground clutter that we often see near a radar?
Antworten
  • Insects.
  • Birds.
  • Large particulate matter, like dust.
  • Fog.

Frage 25

Frage
7. Which of the following phenomena appears on radar as evenly scattered bands of weak reflectivity or ripples near the radar, especially during the afternoon? (Choose the best answer)
Antworten
  • Smoke.
  • Chaff.
  • Horizontal convective rolls.
  • Anomalous propagation.

Frage 26

Frage
8. What reflectivity value is a general threshold that indicates hail? (Choose the best answer).
Antworten
  • 40 dBZ.
  • 50 dBZ.
  • 60 dBZ.
  • 70 dBZ.

Frage 27

Frage
9. Weather satellites measure radiation emitted by the earth or reflected solar radiation.
Antworten
  • They are usually passive detection devices.
  • They are usually active detection devices.
  • They are usually none of them.
  • They are usually both of them.

Frage 28

Frage
TEMA 12: 1. The conditions which must exist to allow thunderstorms to develop are:
Antworten
  • A trigger action, a plentiful supply of moisture and a very stable atmosphere.
  • A steep lapse rate, a stable atmosphere through a large vertical extent and a plentiful supply of moisture.
  • A plentiful supply of moisture and a steep lapse rate through a large vertical extent and a trigger action.
  • A steep lapse rate through a large vertical extent, a low relative humidity and a trigger action.

Frage 29

Frage
2. Hazards of the mature stage of a TS cell include lightning, turbulence and:
Antworten
  • Microburst, wind shear and anvil.
  • Icing, microburst and windshear.
  • Icing, drizzle and microburst.
  • Windshear, hail and fog.

Frage 30

Frage
3. During the ____ stage of a thunderstorm cell, the cloud contains ____.
Antworten
  • Building / up currents and down currents.
  • Mature / up currents and down currents.
  • Dissipating / un currents and down currents.
  • Building / down currents only.

Frage 31

Frage
4. The following is unlikely to be a hazard below a thunderstorm:
Antworten
  • Severe turbulence.
  • Sever icing.
  • Windshear.
  • Large variations in pressure setting values.

Frage 32

Frage
5. Thunderstorms are likely if:
Antworten
  • Air is unstable, there is sufficient water vapor and there is a trigger action.
  • Air is completely stable, there is sufficient water vapor and there is lifting orographically.
  • There is a warm front.
  • Tere is a col in winter.

Frage 33

Frage
6. Hail grows by:
Antworten
  • Freezing as it leaves the cloud.
  • By up and down progress in CU cloud.
  • By collision with supercooled water drops.
  • By collision with ice crystals.

Frage 34

Frage
7. How long approximately does a cumulonimbus cell take to complete the full cycle from the cumulus (building) to dissipating stage?
Antworten
  • 2-3 hours.
  • 1-2 hours.
  • 4-5 hours.
  • About 1 hour.

Frage 35

Frage
8. A microburst usually lasts for ____ and is about ____ across.
Antworten
  • 20 minutes, 20 NM.
  • 5 minutes, 5 km.
  • 30 minutes, 10 NM.
  • 45 minutes, 5 NM.

Frage 36

Frage
9. When flying through an active CB cloud, lightning strikes are most likely:
Antworten
  • Above 5000ft and underneath the anvil.
  • In the clear air below the cloud in rain.
  • In the temperature band between +10ºC and -10ºC.
  • At about 10.000ft above AMSL.
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