Scientists classify the volcanoes as four types. Shield volcanoes are the largest volcanoes on Earth, their lava are different from other volcanoes because they have lower viscosity, in respect to Shield volcanoes lava moves quickly then other volcanoes lava. On diagram 4 labelled B is an example of Shield volcano. Fissure volcanoes are cracks on top of the Earth's surface, it's outcome magma on the other hand it burst externally of power. Diagram 4 labelled A is an example of Fissure volcano. Caldera volcanoes are frame further like inverse volcano due to the totally high pressure. However Caldera constructed of destructive explosions, when volcanoes erupt. Labelled D is an example of
