A hot air balloon floats because the warm air inside is lighter than cool air.
A flame heats the air inside the big balloon. Warm air rises, so the whole balloon gently lifts off the ground.
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Airplanes have big wings that help them stay up in the sky.
Helicopters can go straight up, straight down, and even hover in one spot.
A glider is a plane with no engine that rides on the wind.
Planes have flashing lights so other planes can see them at night.
The Airbus A380 is the biggest passenger plane, with two full floors of seats.