You'll
get "carried away" experimenting with the Solar Energy Bag!
Use the Solar Bag to demonstrate
concepts of energy, thermodynamics, density, and buoyancy! Take the 60-foot
long, 72" diameter bag outdoors and fill it with air. Close the end, tether
with string, and allow the sun's energy to heat the air in the bag. In a few
minutes, the bag begins to float! Challenge students to explain their
observations using kinetic theory and gas laws.
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