Part 107 Flashcards
Stratiform clouds
Thin clouds with little or no vertical movement. Indicative of fair weather
Cumulus clouds
Puffy cloud, formations brought about by the vertical movement of unstable, warm and moist air into cooler regions at higher altitudes 
Cumulonimbus clouds
Clouds that continue to grow, and may form into thunderstorms associated with extremely turbulent winds 
Stationary front
A boundary between two air masses that is relatively balanced. This produces hazy conditions with overcast, clouds, and steady precipitation. I’m 
Unstable air
Cumulus clouds, turbulence, showery precipitation, good visibilit
- In which environment is aircraft structural ice most likely to have the highest accumulation rate?
Freezing rain
- What causes variations in altimeter settings between weather reporting points?
Unequal heating of the Earth’s surface
- For aviation purposes, ceiling is defined as the height above the Earth’s surface of the
lowest broken or overcast layer or vertical visibility into an obscuration.
- Under what condition may an aircraft operate from a satellite airport within
Class C airspace?
The pilot must contact AT as soon as practicable after takeoff.
- With certain exceptions, Class E airspace extends upward from either 700 feet or 1,200 feet AGL to, but does not include,
18,000 feet
Which weather conditions should be expected beneath a low-level temperature inversion layer when the relative humidity is high?
A. Smooth air, poor visibility, fog, haze, or low clouds.
- which is true concerning the blue and magenta colors used to depict airports on Sectional Aeronautical Charts?
Airports with control towers underlying Class B, C, D, and E airspace are
shown in blue.
which initial action should a pilot take prior to entering class c airspace?
O A. Contact approach control on the appropriate frequency.
- what feature is normally associated with the cumulus stage of a thunderstorm?
Continuous updraft
- which factor would tend to increase the density altitude at a given airport?
An increase in ambient temperature
The amount of water vapor which air can hold depends on the
Air temperature
- what situation is most conducive to the formation of radiation fog?
warm, moist air over low, flatland areas on clear, calm nights.
Safety is an important element for a remote pilot to consider prior to operating an unmanned aircraft system. To prevent the final “link” in the accident chain, a remote pilot must consider which methodology?
Risk management
- The most frequent type of ground or surface-based temperature inversion is that which is produced by
terrestrial radiation on a clear, relatively still night
- which weather phenomenon signals the beginning of the mature stage of a thunderstorm?
Precipitation, beginning to fall
Radiation fog
Occurs when the ground cools rapidly and the surrounding area reaches the dewpoint. Can lead to ice fog in extremely cold temperatures.
Upslope fog
Occurs when moist air mass is forced up, slopping land like mountains
Advection fog
When a layer of warm, moist air moves over a cold surface, such as air masses, moving inland from the coast 
Steam fog
Occurs when cool dry air mass moves over warm water. Associated with low level turbulence and icing
