Because the cabin inside the plane is pressurized?
Cabin Altitude is the 'Cabin pressure' in terms of equivalent altitude above sea level .
The cabin pressure on the Airbus A380 is regulated to simulate an altitude of about 6,000 to 8,000 feet, which is lower than the actual cruising altitude of the aircraft. This helps reduce passenger discomfort and fatigue during long flights.
Air craft cabin is fully pressurized.
No. The altitude is smaller.
When standard atmospheric conditions exist.
"Density altitude is the altitude in the International Standard Atmosphere at which the air density would be equal to the actual air density at the place ofobservation". See the related link.Atmospheric density corresponds to the distance from earth's gravitationalcenter, whereas altitude refers to the vertical distance from a set point on earth's surface.Worth noting is the fact that temperature and humidity are factors in air density, and must be adjusted for to give an accurate density altitude.
43 degrees because the altitude of polaris is equal to the latitude of utica.
QNE is pressure altitude, the pressure as if it were ISA conditions regardless of actual conditions, used above transition altitude. QNH is the actual pressure reduced to sea level.
Density Altitude is the altitude relative to the standard atmosphere conditions (ISA) at which the air density will be equal to the indicated at the place of observation.
If your talking about commercial jets, the cabin pressure is equivalent to the pressure at 8,000ft AMSL when at cruising altitude. Max differential pressure is around 7 PSI.
Altitude sickness is caused by the body's inability to adjust to the lower oxygen levels at high altitudes. In a plane, the cabin is pressurized to simulate lower altitudes, so passengers can breathe comfortably without experiencing altitude sickness.
Environmental lapse rate