#4095. How much colder than standard temperature is the actual temperature at 9,000 feet, as indicated in the excerpt from the Winds and Temperature Aloft.

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Presentation transcript:

#4095. How much colder than standard temperature is the actual temperature at 9,000 feet, as indicated in the excerpt from the Winds and Temperature Aloft Forecast? A- -3 degrees C. B- -10 degrees C. C- -7 degrees C.

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#4104. Clouds, fog, or dew will always form when A- water vapor condenses. B- water vapor is present. C- the temperature and dewpoint are equal.

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#4107. What relationship exists between the winds at 2,000 feet above the surface and the surface winds? A- The winds at 2,000 feet and the surface winds flow in the same direction, but the surface winds are weaker due to friction. B- The winds at 2,000 feet tend to parallel the isobars while the surface winds cross the isobars at an angle toward lower pressure and are weaker. C- The surface winds tend to veer to the right of the winds at 2,000 feet and are usually weaker.

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#4121. Stability can be determined from which measurement of the atmosphere? A- Low-level winds. B- Ambient lapse rate. C- Atmospheric pressure.

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#4120. What are some characteristics of unstable air? A- Nimbostratus clouds and poor surface visibility. B- Turbulence and poor surface visibility. C- Turbulence and good surface visibility.

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#4118. What type clouds can be expected when an unstable air mass is forced to ascend a mountain slope? A- Layered clouds with little vertical development. B- Stratified clouds with considerable associated turbulence. C- Clouds with extensive vertical development.

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#4162. Which weather condition can be expected when moist air flows from a relatively warm surface to a colder surface? A- Increased visibility. B- Convective turbulence due to surface heating. C- Fog.

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#4098. Steady precipitation, in contrast to showers, preceding a front is an indication of A- stratiform clouds with moderate turbulence. B- cumuliform clouds with little or no turbulence. C- stratiform clouds with little or no turbulence.

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#4094. A common type of ground- or surface- based temperature inversion is that produced by A- warm air being lifted rapidly aloft in the vicinity of mountainous terrain. B- the movement of colder air over warm air, or the movement of warm air under cold air. C- ground radiation on clear, cool nights and when the wind is light.

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#4140. Which is a characteristic of low level wind shear as it relates to frontal activity? A- With a warm front, the most critical period is before the front passes the airport. B- With a cold front, the most critical period is just before the front passes the airport. C- Turbulence will always exist in wind shear conditions.

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#4254. If involved in a microburst encounter, in which aircraft positions will the most severe downdraft occur? Fig. 13 A- 4 and 5. B- 2 and 3. C- 3 and 4.

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#4144. Which weather phenomenon is always associated with a thunderstorm? A- Lightning. B- Heavy rain showers. C- Supercooled raindrops.

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#4147. What is an indication that downdrafts have developed and the thunderstorm cell has entered the mature stage? A- The anvil top has completed its development. B- Precipitation begins to fall from the cloud base. C- A gust front forms.

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#4148. What are the requirements for the formation of a thunderstorm? A- A cumulus cloud with sufficient moisture. B- A cumulus cloud with sufficient moisture and an inverted lapse rate. C- Sufficient moisture, an unstable lapse rate, and a lifting action.

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#4137. Where do squall lines most often develop? A- In an occluded front. B- In a cold air mass. C- Ahead of a cold front.

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#4146. Which procedure is recommended if a pilot should unintentionally penetrate embedded thunderstorm activity? A- The pilot should reverse aircraft heading or proceed toward an area of known VFR conditions. B- Reduce airspeed to maneuvering speed and maintain a constant altitude. C- Set power for recommended turbulence penetration airspeed and attempt to maintain a level flight attitude.

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#4253. An aircraft that encounters a headwind of 45 knots, within a microburst, may expect a total shear across the microburst of A- 40 knots. B- 80 knots. C- 90 knots.

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#4153. What is an operational consideration if you fly into rain which freezes on impact? A- You have flown into an area of thunderstorms. B- Temperatures are above freezing at some higher altitude. C- You have flown through a cold front.

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#4100. Which conditions result in the formation of frost? A- The temperature of the collecting surface is at or below freezing and small droplets of moisture are falling. B- When dew forms and the temperature is below freezing. C- Temperature of the collecting surface is below the dewpoint of surrounding air and the dewpoint is colder than freezing.

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#4169. Which conditions are favorable for the formation of radiation fog? A- Moist air moving over colder ground or water. B- Cloudy sky and a light wind moving saturated warm air over a cool surface. C- Clear sky, little or no wind, small temperature / dewpoint spread, and over a land surface.

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#4164. In which situation is advection fog most likely to form? A- An air mass moving inland from the coast in winter. B- A light breeze blowing colder air out to sea. C- Warm, moist air setting over a warmer surface under no-wind conditions.

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#4097. A characteristic of the stratosphere is A- an overall decrease of temperature with an increase in altitude. B- a relatively even base altitude of approximately 35,000 feet. C- relatively small changes in temperature with an increase in altitude.

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