Question

Give reasons :-airplanes have pressurised cabins for passengers safety while flying high in the atmosphere

Answer 1

Airplanes are pressurized because the air is very thin at the altitude they fly. The average passenger jet has a cruising altitude of about 30,000 to 40,000 feet. At this altitude humans can't breathe very well and our body gets less oxygen.

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Answer 2

This is because at high altitudes, the preassure is low and it is painful for ears and nose bleeding my occur. Thus, to avoid this, the preassure inside the aeroplane is maintained.