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© by hobbyscience 1999-2008
Page Created:05/26/03
Last Update:03/18/08

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HobbyScience Science Projects for Kids


Working Volcano Exhibit

See this explode... CLICK!

Volcano science fair exhibit by 1st grader Tegan of Silver Beach!

What You Need:
  • Plywood square for base approx. 18"X18"
  • Metal screening new or used to mold shape.
  • Newspaper strips and bits.
  • Flour & water (newspaper, H2O, newspaper for paper mach'e.
  • Water tight container for crater. Plastic cup or empty "Crystalite" container ideal.
  • Spray Paint to give volcano realism (gray pebble finish, brown, red, orange...suggested colors)
  • Vinegar
  • Baking Soda
  • Red food coloring
  • Display Back Cardboard for your facts sheets, etc.
  • Paper toweling
  • Plastic sheeting to place beneath your exhibit to catch "lava" overflow.

What you do:
  • Shape screening into a cone shape and staple onto plywood leaving center hole for cup/crater.
  • Insert cup/crater.
  • Make paper mach'e "glue" with flour and water. Squishy & fun!
  • Cover with paper mach'e. 3 layers drying between layers.
  • When dry using spray paints decorate volcano.
  • When paint is dry you're nearly ready to explode!
To Explode:
  • In a container mix about 10 drops of red food dye into about a pint of vinegar. This should be good for several "explosions".
  • Place about a half cup of baking soda into crater
  • When you're ready to amaze people pour about 2 tablespoons of your red vinegar into the crater....Voom!!
Paper towels can be handy to have on hand for clean-ups.
If you have any helpful tips you would like to share email me.