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Turbulence is the
or unsteady movement of
. Modern aircraft are designed to survive strong winds and dangerous pockets of air. It is extremely rare for turbulence to damage an airplane. It is even
for it to cause a plane to crash. The biggest
to passengers comes from not wearing a seat
. Anyone standing up in the airplane, or not wearing a seat belt while seated, can be thrown around the
. They can suffer bad injuries by hitting their
on overhead lockers or on the plane's
. Scientists from Reading University in the UK reported that severe turbulence is getting worse because of
change. They said
increased by 55 per cent between 1979 and 2020.