火山是一种常见的地貌形态，由地下熔融物质及其携带的固体碎屑冲出地表后堆

A volcano is a common landform. It is a mountain formed by the underground molten material and the solid debris carried by it rushing out of the surface. Between 100 and 150 kilometers below the earth's crust, there is a "liquid zone" where molten silicate material containing volatile components of gas under high temperature and high pressure exists, that is, magma. Once it rushed out of the surface of the weak crust, it formed a volcano. Volcanoes are divided into "active volcanoes", "dead volcanoes" and "dormant volcanoes".

Volcanoes are a common form of geomorphology, a mountain formed by underground molten material and the solid debris it carries that accumulates after it rushes out of the surface. 100 to 150 kilometers below the earth's crust, there is a "liquid zone", the region exists high temperature, high pressure containing gas volatilized composition of molten silicate material, that is, magma. Once it rushes out of the surface from a weak part of the earth's crust, it forms a volcano. Volcanoes are divided into "active volcanoes", "dead volcanoes" and "sleeping volcanoes".

Volcano is a common geomorphic form, which is formed by the accumulation of underground molten material and its solid debris. There is a "liquid zone" 100-150 km below the earth's crust, in which there are molten silicate materials containing volatile components of gas under high temperature and high pressure, namely magma. Once it rushes out of the earth's surface from a weak part of the earth's crust, it forms a volcano. Volcanoes are divided into "active volcano", "dead volcano" and "dormant volcano".<br>