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In this activity, learners set up an experiment to investigate the effects of hot air on the path of a laser beam.

In this quick activity (located on page 2 of the PDF under GPS: Balloon Fiesta Activity), learners will see the effects of convection and understand what makes hot air balloons rise.

Learners apply their knowledge of heat transfer to design two cans - one that will retain heat and one that will cool down quickly.