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From pbskids.org (Approved: begamatt), produced by PBS Kids
 
From DragonflyTV. Andrew and Alex live in Albuquerque, New Mexico, home of one of the biggest hot air balloon festivals anywhere.  They are trying to determine how big a hot air balloon needs to be to lift things off the ground. Using the heat from a hot air gun, the boys try flying different sized plastic bags. The boys calculated the volume of the balloons by multiplying length x width x height and used an infrared thermometer to take the temperature inside our balloons. Since real hot air balloons carry weight, they also experimented with 3 different size tissue balloons to figure out how much each balloon could carry. The boys experimented with how many pennies each balloon could lift off the ground and then collected data and graphed the results. The video/experiment is a great example of predicting, estimating, and problem solving.
 
Ages: 11 - 18 License: Proprietary Owner: PBS Kids Found by begamatt
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