Balloons and Thermals

Instrument to provide the height of the balloon above sea level.

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An aircraft that uses lighter-than-air gas for its lift, with no built-in means of horizontal control.

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The heat source for filling the envelope with hot air.

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To rise or float on the surface of water or within the atmosphere.

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The top of the hot-air balloon's envelope. 

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The main body of the balloon, usually made of nylon, that is filled with lighter-than-air gas.

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The wicker basket that hangs below the envelope. It's used to carry passengers and propane tanks. 

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One of several vertical panels that make up the envelope.

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The last name of the two French brothers who created the first successful manned hot-air balloon in 1783. 

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A panel in the top of the balloon's envelope that allows it to be deflated.

(When a larger area of deflation is needed, some balloons are equipped with a rip panel.) 

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