Jell-o Magma Chambers

Magma Chambers that are good enough to Eat

In these yummy volcano activities you will be creating a magma chamber out of Jell-O and creating crystals out of mixed fruit!


  • Bowl with a round bottom that will hold at least six cups of material
  • Measuring cup
  • Large pkg red Jell-O
  • Variety of canned fruit (Pineapple chunks, pears, peaches, etc)
  • Raisins


  1. Boil 2 cups of water.
  2. Pour the package of Jell-o into the bowl.
  3. Add
    the 2 cups of boiling water and stir until all the gelatin is dissolved.
  4. Stir in 1 cup of cold water.
  5. Place the Jell-O in the refrigerator and
    let it set until it is very thick before adding the canned fruit.
  6. Drain
    the various cans of fruit and add them to the Jell-O.
  7. Put the Jell-O with the mixed fruits back in the refrigerator to
    harden overnight.
  8. Let the Jell-O sit on the counter for about 25 minutes
    before trying to remove it from the mold.
  9. Turn the Jell-O in the mold over onto a
  10. The shape of your Jell-O Magma Chamber is similar to
    ones underground.
  11. If your magma chamber breaks apart slightly as you was released from the mold it may be that is what might have happened underground in a
    real magma chamber!
  12. Now its time to enjoy eating your yummy creation!

Our Volcano activity book is packed with 51 pages of fun activities related to volcanoes. Activities include Popcorn Volcano, Cotton Ball Eruptions, and Volcanic Islands. Myrna Martin

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Science behind the activity

In these volcano activities you have learned that magma chambers are
areas underground where molten rock collects beneath a volcano. The
molten rock begins to cool in these chambers and crystals form in the
liquid rock. The red Jell-o represents the molten rock and the fruit are
crystals that are growing as the molten rock cools.