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Middle school students in Mrs. Roudis's social studies class recently explored the science behind hot air balloons as part of their study on current events. The unit focused on the Atlantic Balloon Fiesta, which is held in Sussex, New Brunswick, Canada. Students learned about the history of hot air balloons, the principles that allow them to fly, and the different types of balloons.
To put theory into practice, the class attempted an experiment using a grocery bag and a blow dryer to simulate how hot air can lift objects. “We tried an experiment using a grocery bag and blow dryer. By heating the air inside the bag to a degree hotter than the air of the classroom, the bag should float for a few seconds before deflating,” Mrs. Roudis said.
The first attempt did not work as expected. The students then switched to produce bags, which are more slender and lack large holes for handles. They also added a cone shape made from a paper plate to direct heat more evenly and protect their hands.
This adjustment led to success with the experiment. The experience showed students that scientific experiments sometimes require changing methods or perspectives when initial results do not meet expectations.
To conclude the lesson, each student made an edible hot air balloon snack using humus, peppers, and crackers.
