This is a working model of a volcano, which demonstrates how magma inside the Earth rises and erupts as lava.
Inside the volcano, we have a red LED light that simulates the glow of hot lava inside.
When the switch is turned on, the LED glows, showing the intense heat and molten rock inside a volcano.
Optionally, we can even show a small eruption using baking soda and vinegar.
This model helps us understand volcanic eruptions and the structure of a volcano.
Materials Required:
- Cardboard base (for mounting)
- Plastic bottle or paper cup (for volcano core)
- Newspapers/tissue & glue (or clay/M-seal) – to shape the volcano
- Brown & red color paint (for mountain & lava)
- LED light (red/orange) – to show lava glow
- 9V battery, battery clip
- Switch & wires (for turning LED on/off)
- Optional: Baking soda + vinegar + red food color (for eruption demo)
Video Step-by-Step Model Making:
1. Make the Volcano Shape:
- Fix the plastic bottle or paper cup at the center of the cardboard base.
- Crumple newspaper and glue around it in a conical shape.
- Leave the top open (like a crater).
- Once dry, paint the volcano brown, and add red streaks to show lava flow.
2. Add LED Light:
- Insert a red/orange LED into the bottle/cup from the side or bottom.
- Connect it to a 9V battery using wires and a switch.
- When the switch is on, the LED glows inside the volcano, simulating glowing lava.
3. (Optional) Real Eruption Effect:
- Inside the volcano, add:
- 1 spoon of baking soda
- Few drops of red food color
- At exhibition, pour vinegar to simulate lava eruption