There are many approaches. Chemical reactions producing gas are popular. For a good analogy to the physics of a real eruption, shake a bottle of cola then pierce it.
There are many approaches. Chemical reactions producing gas are popular. For a good analogy to the physics of a real eruption, shake a bottle of cola then pierce it.
There are many approaches. Chemical reactions producing gas are popular. For a good analogy to the physics of a real eruption, shake a bottle of cola then pierce it.