We know that there are lots of volcanoes in space.
The largest volcano in our solar system is on Mars, while Venus has the largest number of volcanoes.
Today we did a volcano demonstration (this is not an experiment or an investigation, rather it is a demonstration of how lava flows from a volcano).
We know that bread soda and vinegar will react together to give a gas called carbon dioxide.
If we add wash-up liquid and red food dye we can make our own erupting mini-volcano.