A hot air balloon flies because it is filled with hot air. Hot
air rises and causes the balloon to lift from the ground.
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Because the fire or heating device heats the air in the top
section ( the actual balloon ) and hot air rises... so the hot air
trapped in the balloon makes the balloon rise :)
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to make a hot air balloon rise you use hot air
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a hot air balloon virtually weighs negative lbs but it would
depend on how hot the air is in the balloon.
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There is specific Tagalog translation of HOT AIR BALLOON?