Volcano Eruption

Good afternoon scientists! We just had an exploding good time! Help your little scientist get messy with science today! 🙂

MaterialsVolcano Eruption (3)

Volcano (We used a model I had from my teaching days, but a regular cup would work just fine, You could also make a Salt Dough Volcano get the recipe from my Salt Dough Trace Fossils Post, just make sure to fully dry out your volcano before the fun begins)

Baking Soda

Vinegar (We used white)

Small Measuring Spoon ( we used 1/4)

Small Liquid Measuring Cup

Optional: Food Coloring


1. Gather your materials and head outside to an open area that you don’t mind getting a bit messy, ideally near your hose so it is easier to wash up between volcano eruptions. Have your little scientist add a scoop of baking soda to your “volcano”.Volcano Eruption (38)

3. Add Vinegar to the liquid measuring cup, we started with 1/4 cup (if you would like a colored eruption add a few drops of food coloring and mix it up). Add the vinegar to your volcano and watch the eruptionVolcano Eruption (28)

Extended Learning

Try doing the experiment with different amounts of the baking soda and vinegar. Did the amounts affect how big your eruption was?

Try adding the vinegar first then the baking soda. Did the volcano erupt the same way?

Try the experiment with the ingredients from our film canister rockets. Which eruption method did you like best?

Talking Points

In this investigation we experimented with vinegar and baking soda to erupt our volcano. Vinegar is an acid, it has a pH of less then 7. Baking soda is a base, it has a pH higher then 7. When you combined an acid and base together it causes a chemical reaction. In our investigation the chemical reaction was the eruption of the volcano.

2 thoughts on “Volcano Eruption”

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