Most likely the jet engines.
the sound you hear is a stall speed warning if that is the sound I think you hear
There is not much point in having airplanes unless they 'take off' .
yes
yes
Airplanes need a lot of speed to take off because they are not designed for vertical takeoff and are to heavy to do so.
Airplanes take off, climb fly, cruise, transport, descend, and land.
Mostly they do, not always. It is more efficient to take off into wind.
Airplanes land and take of at airports you dufus
Yes. Although a certain amount of drag is introduced when airplanes are flying in the rain, this is minimal and has very little effect on the handling of the aircraft. Airplanes can take off, fly, and land in the rain in perfect safety.
seaplane aquaplane
it will make it sound like a ford
1. Hover. 2. Take-off and land vertically. Although there are airplanes (such as the Harrier) which can do these things.