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How to Make a Papier Mache Erupting Volcano for the Science Fair

November 6, 2021

Today we are sharing our very own Papier Mache Erupting Volcano, it was a relatively “quick project” that we made in a “last minute” hurry to celebrate my son’s “Hawaiian Day” at school. My son has been learning all about the Hawaiian Volcanoes – in particularly Mauna Loa and was very excited to recreate a volcanic eruption.

Science Fair Project - create your own Papier Mache Erupting Volcano - a great classic science project for kids. Lots of fun and easy to make.
First published in July 2015

Our papier mache volcano is perfect for the classic “Science Fair” project, if you are looking for a science project to make with the kids. So long as you have enough “drying time” for the papier mache, this is a quick and fun science fair project to make. We added a coat of varnish to our volcano, to allow us to keep erupting it! Check out more fantastic Chemistry Experiments for kids over on my friend’s site Science Sparks!

Learn about Mauna Loa

My kids made this whilst learning about Mauna Loa at school. Here are the basic facts about Mauna Loa from an excerpt from Wikipedia:

Mauna Loa is one of five volcanoes that form the Island of Hawaii in the U.S. state of Hawai?i in the Pacific Ocean. The largest subaerial volcano in both mass and volume, Mauna Loa has historically been considered the largest volcano on Earth [Red Ted’s favourite fact!]. It is an active shield volcano with relatively shallow slopes, with a volume estimated at approximately 18,000 cubic miles (75,000 km3), although its peak is about 120 feet (37 m) lower than that of its neighbor,Mauna Kea. Lava eruptions from Mauna Loa are silica-poor and very fluid, and they tend to be non-explosive.

Find out more about Mauna Loa via Wikipedia. Then add this Homemade Volcano DIY to your volcano lesson plan!

Supplies needed to make a Papier Mache Volcano

Check out our basic how to make papier mache post too!

  • an empty plastic bottle/ empty soda bottle (small is good)
  • newspaper
  • masking tape
  • a box lid or similar “to contain” the volcano – some people like to use an old baking pan
  • plain flour & water (for the DIY papier mache paste, more info below)
  • paints (we used acrylics, as they are a plastic and marginally waterproof)
  • waterproof varnish (optional, but great for being able to reuse the volcano science project)

To make the Volcano Erupt you will need:

To create the chemical reaction that is the erupting volcano, you need to main compounds, plus a little liquid

  • Baking Soda (Bicarbonate of Soda in the UK)
  • basic white vinegar (any vinegar will do, but this tends to be the cheapest)
  • A little (warm) water – the warm water acts as an accelerant. As part of your experiment you can compare the reaction with cold water
  • Food coloring (optional) for the “magma” color

People also like to add dish soap for extra bubbles effect, but it isn’t strictly speaking necessary!

DIY Papier Mache Paste How To:

Hop over to see our DIY Papier Mache Paste Detail post!

  1. Mix one part flour to two parts water in an old container. (we used half a cup of flour and a cup of water)
  2. Pop into microwave and cook at full heat.
  3. Performances of microwaves vary – so this can be anything from 30sec to 2-3 min – depending on microwave and the amount of mixture you are making. So keep checking and stirring!
  4. The mixture will be hot, so you may have to let it cool down a little. It will keep in the fridge with a cover for 1-2 days.

How to Make your Papier Mache Erupting Volcano:

Some people like to make their erupting volcaon from salt dough.. but you would end up making quite tiny volcano that way (or need A LOT of salt and flour to make a volcano as big as the one shown here), we like this simple papier mache method, as it made using materials from the trash! Apart from a homemade papier mache recipe and a little acrylic paint, it is free to make!

The process shown here is the best simple volcano to make at home!

Make the Basic Volcano Shape

How to make a papier mache volcano for science fair

1) First we cut down our cardboard box, to create a base for our volcano to go in and to capture the fluids from the erupting volcano. You may want to cover all the holes you can see (especially in the corners) with additional tape.

2) Place your empty plastic bottle in the centre of your cardboard box (remove the lid).

How to make a papier mache volcano for science fair - step 2

3) Scrunch up some newspaper and place it all around the empty bottle. This is you can shape your volcano and make the steep sides.

How to make a papier mache volcano for science fair - step 3

4) Using your masking tape, make a “frame” – running from the top of the bottle down to the cardboard platform and trapping the scrunched up newspaper underneath. This will help shape the steep sides for when you start layering it with newspaper strips.

How to make a papier mache volcano for science fair - step4

5) Tear your remaining newspaper into stripes and smaller pieces (12 x 4cm ish is good). And start applying your papier machie layers all around the volcano – using the masking tape as a frame. Your volcano shape will start to emerge. The top of the empty soda bottle needs to stay clear, as this is the volcanoโ€™s crater .

6) Check for any gaps and holes and make sure the newspaper is nice and flush against the side of the volcano.

7) Let dry fully.

(IF NEED BE ADD A SECOND LAYER ON ANOTHER DAY and let dry again)

Paint Your Volcano to represent earth and magna

How to make a papier mache volcano for science fair - painting
How to make a papier mache volcano for science fair - final

8) Now get creative and paint – we used a dark brown base (mixing brown and black) for our volcano and then at the end added some red and yellow lava streaks/ molten rock around the top of the volcano crater. The kids had a blast painting this!

9) Let dry fully.

10) Finally… add a coat of waterproof varnish (any craft decoupage varnish that has a waterproof finish will do). This won’t make the volcano totally waterproof, but will certainly help in preserving it.

Now let the fun begin… here is the science part to an erupting volcano –

Let’s make the Baking Soda Volcano Erupt (Bicarbonate of Soda in the UK):

I LOVE this article about the Science of Erupting Volcanoes – and how the “order of things” affect the final eruptions! I am keen to try out the mentos and diet coke at some point soon!

Science Fair Projects - create your own Papier Mache Erupting Volcano - a great classic science project for kids. Lots of fun and easy to make

Watch the DIY Volcano VIDEO

To erupt our volcano we you will need to:

  1. Create a paper funnel and added 2-3 tea spoons of bicarbonate of soda to our plastic bottle. You can at this stage also had a few drops of detergent, but it really isn’t needed!
  2. Pour in half a glass of warm water mixed a few drops of red food coloring
  3. Pour in approximately a class full of (inexpensive) vinegar.

And stand back…. (watch the video above!!)

Hope you have fun with your DIY Papier Mache Volcano!

More great Papier Mache Projects here:

You can also see our Erupting Volcano Video on Youtube:

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Filed Under: How To's, Recycling, Science, vlogs 21 Comments

Comments

  1. Patty says

    March 8, 2016 at 2:03 pm

    Not sure if your aware of the ads running on the side of this. Looking at this with my grandson for a science project and on the side is an ad ( Sekindo ) for intimsey and ending relationships, not exactly 3rd grade material ( or at least it shouldn’t be )

    Reply
    • Red Ted Art says

      March 9, 2016 at 8:04 am

      Oh man, thank you so much for letting me know about that. I will look into what happened there :-/

      Reply
    • Judith says

      November 20, 2018 at 12:54 am

      I think that we should takebit because it coud be a distracciรณn to the kids and mostly to 2nd and 3rd grade

      Reply
  2. Keara says

    April 24, 2016 at 3:42 pm

    Looks fun! Is that the same as baking soda in the states?

    Reply
    • Red Ted Art says

      April 25, 2016 at 7:33 am

      yes!

      Reply
  3. Candice says

    October 25, 2017 at 8:28 pm

    When you’ve made the masking tape frame do you then coat the smaller ripped pieces of newspaper in the flour mix and place around the frame or do you brush on the mix?

    Sorry silly question I know but I want to try this project with a group of boys I work with developing their language skills so correct instruction are important ?

    Reply
    • Red Ted Art says

      October 26, 2017 at 12:25 pm

      Not a silly question! We dip the newspaper strips in the glue mixture and then place on.

      Reply
  4. Liz says

    February 11, 2018 at 8:31 pm

    Just wanted to say a very big THANK YOU. My daughter had to do a volcano for school and we followed your guide. It turned out brilliant and was great fun to make. Your a life saver, thank you.

    Reply
    • Red Ted Art says

      February 12, 2018 at 8:52 am

      Awww so pleased to hear it!! YAY!

      Reply
  5. Anita says

    March 15, 2019 at 2:04 am

    Hi,the volcano project and ur explanation are awesome.Me and my son are making this volcano project for his school and ur guidelines helped us to build the volcano and now we r in the stage of painting so I would like to know which waterproof varnish u used.
    Thanks in advance.

    Reply
    • Red Ted Art says

      March 19, 2019 at 9:17 am

      To be honest, used what you can find in your local shops!! Enjoy!

      Reply
  6. Sharon says

    April 19, 2019 at 1:55 pm

    Can I re-use the bottle and make the volcano explode multiple times?

    Reply
    • Red Ted Art says

      April 24, 2019 at 11:39 am

      Yes, absolutely! Just pat down the volcano with some kitchen towel paper to dry it!

      Reply

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