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Home / Science projects / Volcanic Eruption
  • Volcanic Eruption

    Volcanic Eruption

    You can demonstrate a volcanic eruption using some simple household items. Kids usually have a great time doing this experiment, and may want to repeat it several times!

    To make a big eruption, use a small plastic bottle (the size 20-oz soft drinks come in works well). Fill the bottle halfway (1 to 1.5 cups) of vinegar. To start the eruption, drop a baking soda 'bomb' into the bottle--wrap one tablespoon of baking soda into a small piece of tissue paper, tying the ends with string.

    You should see an instant eruption--'lava' will spurt out of the mouth of the bottle. The baking soda, a base, neutralizes the acid in vinegar. This releases carbon dioxide gas, which causes the fizzing action in your volcano.

    If you want your volcano to look more realistic, use clay or playdough to make a 'mountain' around the bottle. Or, if you're working outside, you might want to use dirt and pebbles. You can also add red food coloring to the vinegar solution to make it look more like lava.

    To learn more about volcanoes, take a look at our Introduction to Volcanoes Teaching Tip.

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By: Janetta Ewing
Date: Oct 05, 2015

It was fun for me because it makes a good sience fair project. Thank you for a wonderful idea. Now my daughter got an a in science.

By: bob
Date: Nov 24, 2014

i loved it

By: yasmin
Date: Nov 19, 2014

how did the the volcano erupt in experiment

By: Samantha Olenzek
Date: Jun 13, 2014

Thanks for the best way to make a volcano.