Erupting Volcano Experiment

Erupting Volcano Experiment

Have you ever wondered how to make your own erupting volcano? It's easy and everyone can make one at your party with modeling clay and our special lava formula.

Note: This experiment can be messy so it's best to do it outside, or, make sure there is a lot of newspaper on the floor and on the table.

What You'll Need for the Volcano:

  • A big block of modeling clay for each child
  • Plastic plates
  • Unsharpened pencils

Lava Ingredients (yields 2 servings):
  • Red food coloring
  • 1 teaspoon baking soda
  • 1 teaspoon liquid dish soap
  • 1/4 cup white vinegar
  • 3-ounce paper cups
  • A funnel

Make the Volcanoes:
  1. First, instruct the children to place their modeling clay on top of a plastic plate.
  2. Have them sculpt a volcano out of the modeling clay.
  3. They can push their finger into the middle of the volcano to make a hole or use an unsharpened pencil to make the hole.
  4. Use the unsharpened pencil to "draw" vertical lines in the clay that go down the sides of the volcano. This makes crevices for the lava to flow down.

Make the Lava:

While you're mixing the ingredients, ask the children what they know about volcanoes and lava. You can tell them that lava is called "magma" before it erupts and "lava" after it erupts.
  1. You may have to mix several batches of lava so each child has about 3 ounces.
  2. In a cup, mix the baking soda and the dish soap together. Add a few drop of red food coloring.
  3. Let each child pour 3-ounces of the mixture into the hole of their volcano. This will be easier if you use a funnel.
  4. When you are ready count "3...2...1" out loud and pour the white vinegar into the hole.
  5. Enjoy as the volcano erupts!
  6. Let each child erupt their volcano one at a time.
  7. If you'd like, take pictures to mail later with your thank you cards.

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