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Hot Air Balloon
Fly high with hot air!
Hot air is lighter than cold air! When you heat air inside a balloon, the warm air molecules move faster and spread apart, making the air less dense. The lighter hot air floats up, just like a bubble in water. That's how hot air balloons fly — a flame heats the air inside, and up you go!
Fun Fact: The first hot air balloon passengers were a sheep, a duck, and a rooster in 1783!
Hold the flame to fly up! Release to float down.