A volcano is a rupture on the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. They have mainly 3 classification .
Volcanoes come in all shapes and sizes.
Still, most volcanoes share some similar features. For example, if we take a look inside a volcano, we notice it sits on top of a magma chamber, which is an area below the earth's surface where magma gathers and builds in pressure.
The magma chamber leads to a volcanic pipe, which is also called a volcanic conduit. This is the passageway within a volcano leading from the magma chamber to the surface. At the surface, the magma, along with dissolved gases, exits the volcano through a vent.
The features of volcanoes are easy to remember if you relate them to the hot water heater supply in your house, whereas the magma chamber is like your hot water heater and the volcanic pipe is like the pipe that carries the hot water to your showerhead..
Volcanic features can be divided into 2 categories Intrusive volcanic features and Extrusive volcanic features.
Intrusive volcanic landforms When magma is forced to the surface only a small amount of the mass actually reaches that level. Most of the magma is intruded into the crust where it solidifies into a range of features. These are often exposed at the surface by later erosion
Extrusive refers to the mode of igneous volcanic rock formation in which hot magma from inside the Earth flows out (extrudes) onto the surface as lava or explodes violently into the atmosphere to fall back as pyroclastics or tuff.