Project
Make a Volcano
The classic for a reason. Build the cone from papier-mâché or clay, then run the eruption twice — once for joy, once to test what changes the reaction.
Ages
5-7, 7-9, 9-11
Level
KS1, Lower KS2, Upper KS2
Subject
Science
Duration
60 min
What you'll need
- Bicarbonate of soda
- Vinegar
- Washing-up liquid
- Tray
- Card or clay
What the learner will explore
- Acids and bases
- Volcano structure
- Fair testing
How to do it
- 1
Build a cone around a small bottle or cup.
- 2
Add bicarbonate of soda and a squirt of washing-up liquid.
- 3
Pour in vinegar and stand back.
- 4
Repeat with a different amount and compare.
Make it easier
Skip the building and erupt in a cup on a tray.
Make it harder
Measure quantities and record eruption height as data.
Try it differently
Take it outside and build a mountain range in the mud.
Related activities
Voleio activities are ideas and planning support, not educational or medical assessment.