4. Convection in a Pan - Logistics

10 min demo and introduction
30-40 min investigation
10-15 min discussion

Groups of 4-6 students

For the demo, the teacher needs:

  • One dry cleaner bag
  • Cellophane tape
  • 3-4 paper clips
  • Blow dryer (hand held hair dryer)

Each group of students needs:

  • One aluminum pie tin
  • Tea light candle, hot plate, or other heat source
  • Matches or a lighter
  • 4 film canisters
  • Food coloring in dropper bottles or with eyedroppers
  • 2-3 cups water
  • 2-3 tablespoons liquid hand soap or shampoo with a metallic, pearly appearance. SoftSoap® and Walgreen’s Liquid Soap both work well. Look for glycol stearate, glycol distearate or glycerol stearate among the ingredients on the label.
  • Small pocket-sized mirror

Every student needs a copy of the Convection in a Pan handout.