Audience-Pleasing Physical Models to Support CO2 Outreach

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Abstract

Objective

Materials & Supplies

Demo
1

Demo
2

Demo
3

Demo
4

Demo
5

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Materials and supplies

Demo 1 [Go to Demo]

  • Styrofoam balls in three sizes (1, 1¼, 1½ inch)
  • Paint to color balls in three contrasting colors
  • Precut, 1-inch-long pieces of pipe cleaner
  • Candle and match

Demo 2 [Go to Demo]

  • 5-lb bag of charcoal briquettes
  • Large white garbage bag (on which to spread briquettes )
  • Premoistened towelettes for clean up

Demo 3 [Go to Demo]

  • Two 10" × 10" sheets of 4 wires/inch (¼-inch mesh), galvanized hardware cloth from a builders’ supply store
  • Tape to seal sharp cut ends of hardware cloth
  • Several ordinary pipe cleaners from a craft shop

Demo 4 [Go to Demo]

  • 10-gallon aquarium or similar container
  • Plastic tray to fit inside aquarium (dry ice placed directly on glass may crack it; a container provides insulation)
  • Bubbles and bubble-blowing wand from a toy store
  • Candle
  • Matches or lighter
  • Several clear-plastic 12-oz cups
  • Two hot pads (gloves also work) for safe handling of dry ice
  • Several 1-pint water bottles filled with drinking water
  • Ice pick
  • Plastic bag to cover work surface
  • 5- to 12-lb block of dry ice
  • Small Styrofoam ice chest for transporting dry ice

Demo 5 [Go to Demo]

  • Clear glass marbles from hobby or garden supply (enough to fill the jar); better if not of uniform size
  • 1-quart jar (clear, with water-tight lid)
  • Colored lamp oil from hobby or hardware store
  • Tap water to fill jar