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Bitmap Image  |  1997-11-26  |  149.5 KB  |  519x370  |  8-bit (114 colors)
   ocr: HOT-AIR BALLOON TECHNICAL NOTES on Buoyancyin Air Why do some things float? Floating in different liquids Why is a balloon lighter than air? How high can a balloon rise Pressure on a balloon How so people steer balloons?