Skip to Content

How to make an erupting volcano

Sharing is caring!

school boy erupting paper mâché volcano with baking soda and vinegar

Grab our step by step instructions to make and erupt your own paper mâché volcano!

How to make an erupting volcano

Making a real erupting volcano is a brilliant activity for kids, not only does it incorporate art with the designing and making a paper mâché volcano but it finishes off with a bit of scientific experimentation and a chemical reaction.

A brilliant activity for keeping kids busy during the school holidays. 

What you need to make a paper mâché erupting volcano

  • a thick piece of cardboard as a base for your volcano
  • a clean empty bottle – wide neck is easier to drop the bicarbonate of soda into.
  • sticky tape to seal the bottle lid whilst you create the mountain around it.
  • paper mache – we used old torn newspapers dipped in a flour and water solution 2 parts plain flour to 4 parts water. Just keep making it up every time you run out – quantity needed depends how big your volcano is going to be.
  • paints for decorating the paper mache volcano
  • 400ml white vinegar
  • 4 tsp red food colouring
  • 5-6 tsp bicarbonate of soda

How to make and erupt a paper mâché volcano

  • Stand the bottle onto the piece of cardboard – tape over the opening and start to build up the paper mache mountain around it – you’ll need to do this in several sessions so that it gets chance to dry before the next layers are put on.
kids making a paper mâché volcano
all helping to make the paper mache volcano
  • Once your paper mache volcano is finished and dry – paint it.
  • When the paint is dry – ERUPT IT!
  • Remove the sticky tape from the opening of the bottle – pour in the vinegar and red food colouring.
  • Tip in the bicarbonate of soda.
  • Watch the eruption!
kid erupting a paper mâché volcano
tipping in the baking soda

More simple science projects for you to try… 

kids homemade paper mâché volcano being erupted with baking soda and vinegar

Head this way for loads more fun kids activities