What does vibrate mean?
to very quickly move up and down or left and right. It makes a buzzing sound.
What does vertically mean?
to go up straight
helicopters are sometimes called....
choppers
Helicopters dont have wings, they have...
blades
How do helicopters help to put out fires?
They can spray water over the fire
What does hover mean?
to stay hanging in the air in one place
Why are helicopters good at rescuing people?
Because they can land anywhere and can hover