Density and Pressure of a Hot Air Balloon

This Density and Pressure of a Hot Air Balloon lesson plan also includes:

Using a dry cleaner bag and a blow dryer, create a hot air balloon! The materials list suggests obtaining one dry cleaner bag per student, but since this is probably inconvenient, consider doing this as a demonstration during a lesson on density, air pressure, or convection. It is sure to be a gas!

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  • Discussion questions are provided to support the activity

  • This lesson does not touch upon the concept of convection and the fact that more dense air is pulled downward by gravity, allowing the warmer, less dense air to rise
  • Rubric does not represent the lesson content very well