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Home » How to make a Volcano

How to make a Volcano

September 14, 2016 by admin 2 Comments

Volcanoes are a fantastic first science experiment for children, and definitely one they will remember for a long time. Over on Science Sparks we’ve made lots of different volcanoes, but here are my favourites.

Sand Volcano

This volcano is easy to make and perfect for using up sand at the end of summer. Just model the sand around a container and off you go.

Sand volcano

We love this tape volcano from Inspiration Laboratories.

How about a snow volcano? The contrast between the snow and red lava is striking.

Snow volcano

Or for a more traditional volcano, use mod roc and cover with clingfilm so you can reuse it over and over again!

make-a-reusable-volcano

 

How to make a volcano

You’ll need

  • An small empty container
  • 2 spoonfuls of baking soda (bicarbonate of soda )
  • 1 spoonful washing up liquid
  • a few drops of red and yellow food colouring
  • 30 ml vinegar

Instructions

Make your volcano around the water bottle using whichever material you’ve chosen.

Add everything except the vinegar to the water bottle.

Add the vinegar and watch the the volcano erupt. You might have to give it a good stir or add some vinegar.

Why does the volcano erupt?

Vinegar (an acid ) and bicarbonate of soda ( an alkali ) react together to neutralise each other. This reaction produces carbon dioxide, which is the bubbles you see. These bubbles make the washing up liquid bubble up to give the appearance of lava erupting from a volcano.

How to make a volcano

Filed Under: Crafts, Family Fun Tagged With: cool science experiments, science experiments, volcano

Reader Interactions

Comments

  1. Sonia

    September 19, 2016 at 11:41 am

    Oh these are fab, really need to have a go at these with Bugs at the weekend x

    Reply
  2. Becky

    October 10, 2016 at 5:48 am

    Ah great fun indeed!

    Reply

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