you use a soda bottle then cover it with news paper
A volcano forms a mountain as ash and/or lava build up over time from successive eruptions.
go look up how to make a volcano model on this website
a volcano
magma rises up out of a volcano by the build up of pressure
a shield volcano
If a tall shield volcano has been built from many eruptions over thousands of years the magma that helped build this volcano contained
They didn't know it was a volcano. So they just went on with their lives.
volcano
valleys
A volcano erupts when gases build to an inescapable high pressure. The gas pushes magma and ash through the cone of the volcano causing an eruption.
because the cynder, ashes and lava build around the volcano.and when the lava cools around it, it becomes a hard crust