Why Lesson Planet?
Learners watch a demonstration using a plastic bag and a hair dryer to create a hot air balloon. After the demonstration, they discuss the results and whether or not hot water behaves the in the same manner as hot air. They conduct their own experiments using soapy water in a pie pan and heating it with a candle. After observations are recorded, they compare the experiments and discuss how this relates to what is going on in the mantle of the Earth.