Aniya, our planes fly in the lowest layer of
the atmosphere, closest to Earth. On Earth, it
feels like air doesn’t weight very much, but
there’s actually a lot of pressure pressing down
on us at all times! But as you get higher and
higher into the air, air pressure decreases, and
that can be very dangerous for us to breathe.
There’s less oxygen, so we would run out of air
fast. That’s why airplane cabins are
“pressurized,” they make it so that we can
breathe that high up. It’s important that if
something goes wrong and the plane starts to lose
pressure, the pilots can drop oxygen masks and
people will have air to breathe until they get to
safety! So it is important to constantly monitor the
conditions and properties of the atmosphere in
order to fly the plane there and be safe.
Pilots are human beings, like you, which means
that they breathe the atmosphere, also just as you
do. Knowing what is in the atmosphere and what the
atmosphere is doing is thus essential for their
informed survival, just as it is for yours.
Also, their airplanes are flying in the
atmosphere, too, which means that the
properties of the atmosphere, including density,
wind, temperature, and everything else, have a
huge effect on how and whether their planes can
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