How Does A Hot Air Balloon Fly?
Answer:
The bag of the balloon is called the envelope is made out of such material that it is competent to contain hot air. As we know of the simple rule that hot air rises upwards, the same principle is used contained by a hot air balloon. The air is heated and the hot air rises upward and is capture in the envelope. When enough hot air is collected surrounded by the envelope, it is able to lift the basket along near it into the air. That is why air has to be heated and the balloon cannot rise formerly there is a specific amount of hot hair that can pull it up otherwise it will not make higher.
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