All experiments
Science · Ages 6+
Build a Volcano
Adjust the pressure and watch it blow.
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What is this experiment about?
Real volcanoes are powered by pressure building up underground. Adjust the sliders below and press erupt to see a simplified simulation of what happens.
Questions kids ask
- Is this how real volcanoes work?
- This is a simplified simulation for learning, not an exact scientific model — but it captures the basic idea that pressure builds up until it's released.
- What causes real volcanoes to erupt?
- Molten rock (magma) and gases build up pressure underground until they force their way out through a vent.
- Are all eruptions explosive?
- No — some volcanoes ooze lava slowly, while others erupt suddenly and explosively depending on pressure and thickness of the magma.
