Atmosphere I
It’s the temperature to which air must be cooled to become unable to hold more water (saturation). At that point, moisture becomes visible (clouds).
What is the dew point?
It’s an air mass that is usually warm and moist.
What is a low pressure air mass?
Its name means “puffy” and “rain”.
What is a cumulous-nimbus?
When flying through them, maintain level flight and do not force the plane to maintain altitude and heading.
What are turbulences
It’s the horizontal distance measured in inches from the datum line (reference point).
What is the arm?
It’s an air mass usually drier and cooler.
What is a high pressure system?
Its energy is the primary driving force of weather.
What is the Sun?
It becomes visible when warm air saturates as ground cools faster than air at night.
What is radiation fog?
They are a narrow and elongate band of active thunderstorms. They represent the single most dangerous hazard to aircraft.
What are squall lines?
It is calculated as the distance x the weight, it is a measure of gravitational force.
What is the moment?
It’s a large body of air with a uniform temperature and moisture.
What is an air mass?
It is a phenomena that occurs when the upper atmosphere is warmer than the lower layer.
What is a temperature inversion?
It is a weather phenomenon occurring when air moves over colder ground/water.
What is advection fog?
It’s a weather advisory containing information about weather phenomena potentially hazardous to light aircraft.
What is an AIRMET?
Its weight is about 6 lb/galons
What is fuel?
It’s a boundary separating different air masses.
What is a weather front?
It is the rate at which the air temperature cools by about 2°C for each 1,000 feet in altitude.
What is the lapse rate?
It is a weather phenomenon occurring when three conditions are met: unstable air, high moisture and source of lift.
What is a thunderstorm
It’s a weather advisory containing information about weather phenomena that can affect the safety of all aircraft.
What is a SIGMET (or CONVECTIVE SIGMET).
It’s a weight definition that does not include the usefull load (pilot, passenger, baggage, fuel…)
What is the aircraft empty weight?
It is measures the weight of air above the measurement point.
What is pressure?
Its name means stratified, layered.
What is a stratus?
It is a serious weather hazard usually occurring near a thunderstorm that that can create sudden, strong change in wind direction and speed.
What is a wind shear?
It is a weather report depicting air masses and fronts.
What is a surface analysis graph?
It is the true altitude corrected for non-standard pressure and non-standard temperature. It is the altitude where “the plane thinks it is”.
What is density altitude?