Kids Science Project – Volcano Eruption. This is an easy kids science project that includes water, vinegar, dish detergent and food colouring (Experiment 1), and diet Coke and Mint Mentos (Experiment 2). The baking soda will react with the vinegar and cause an eruption, and the same will happen with the diet Coke and Mint Mentos. We found that the eruption in Experiment 2 was more dramatic than the one in Experiment 1.


Materials needed for a Paper-Mache Volcano:
Medium size box.
1 – 2 cups flour, depending on the volcano size.
1 – 2 cups water.
1 bowl (medium size) and Spoon (to stir with).
Scissors and Scotch / masking tape.
Small plastic bag.
Any marker (pen or pencil).
Plastic or glass bottle.
Paint & brush.
Optional: decoration for your volcano mountain, like sticks, small rocks, tips of shrubs, etc.


Cover your working area with newspaper to make it easier to clean up later.
Cut the sides of your box, and keep the cut-off sides to use later on.
Place the bottle in the middle of the box, draw a circle around the base, and cut it out. The bottle must be able to slip through.
Cut the box sides into about 2cm strips.
Cover the bottle with a small plastic bag to keep building materials from sticking to the side of the bottle.
Make a volcano structure around the bottle with your left-over cardboard strips.
Mix your flour and water to make a paste.
Cut or tear several dozen strips of newspaper.
Drag it through the paste and gently squeeze off any excess glue.
Add each glue-soaked strip of newspaper to the volcano structure, gently smoothing each down.
There must be several layers of newspaper strips over the entire mountain, and on the bottom of the box.
Paint your volcano structure, and let it dry. You can now decorate the volcano by adding sticks, small rocks, tips of shrubs and other stuff to make it look more real.

Volcano Eruption  Volcano Eruption  Volcano Eruption  Volcano Eruption

EXPERIMENT 1 – Vinegar, Baking Soda, Dish Soap, Food Colouring:
Baking Soda (bicarbonate of soda)
Washing Up Liquid (dish soap)
Red Food Colouring
Put three teaspoons of baking soda in a bottle and put it inside your model volcano.
Fill another plastic bottle of the same size, about one-third full of vinegar.
Add a few drops of food colouring and a good squeeze of dish soap to the vinegar.
Tip the vinegar mixture onto the baking soda already in another bottle inside your volcano model.
Carbon dioxide gas (bubbles) forms when you mix baking soda and vinegar, and so your volcano erupts!
The volcano will erupt again and again, each time you add dish soap and baking soda! The emission will continue as long as ingredients keep being added, and you can have fun and play with the foamy concoction.



EXPERIMENT 2 – Diet Coke & Mentos:
Small bottle of regular diet Coke.
3 regular Mint Mentos.
Replace the small water bottle model in your model volcano (in our first experiment), with a small bottle of diet Coke. Use a freshly opened bottle of regular diet coke to make it work. Add the 3 regular Mint Mentos, and see what happens! (Flavored diet cokes and flavored mentos don’t react as well).