英语翻译火山是由什么形成的?地表下面,越深温度越高.在距离地面大约32公里的深处,温度之高足以熔化大部分岩石.岩石熔化时膨胀,需要更大的空间.世界的某些地区,山脉在隆起.这些正在上

英语翻译火山是由什么形成的?地表下面,越深温度越高.在距离地面大约32公里的深处,温度之高足以熔化大部分岩石.岩石熔化时膨胀,需要更大的空间.世界的某些地区,山脉在隆起.这些正在上
英语翻译
火山是由什么形成的?地表下面,越深温度越高.在距离地面大约32公里的深处,温度之高足以熔化大部分岩石.
岩石熔化时膨胀,需要更大的空间.世界的某些地区,山脉在隆起.这些正在上升的山脉下面的压力在变小,这些山脉下面可能形成一个熔岩（也叫“岩浆”）库.
这种物质沿着隆起造成的裂痕上升.熔岩库里的压力大于它上面的岩石顶盖的压力时,便向外迸发成为一座火山.
喷发时,炽热的气体、液体或固体物质突然冒出.这些物质堆积在开口周围,形成一座锥形山头.“火山口”是火山锥顶部的洼陷,开口处通到地表.锥形山是火山形成的产物.火山喷出的物质主要是气体,但是象渣和灰的大量火山岩和固体物质也喷了出来.
实际上,火山岩是被火山喷发出来的岩浆,当岩浆上升到接近地表的高度是,它的温度和压力开始下降,发生了物理和化学变化,岩浆就变成了火山岩.

英语翻译火山是由什么形成的?地表下面,越深温度越高.在距离地面大约32公里的深处,温度之高足以熔化大部分岩石.岩石熔化时膨胀,需要更大的空间.世界的某些地区,山脉在隆起.这些正在上
What is the volcano formed?Below the surface,the deeper the higher temperature.The ground at a distance of about 32 kilometers deep,the temperature high enough to melt most of the rock.Expansion of molten rock,when the need for more space.Some parts of the world,mountains in the uplift.These mountains are on the rise in pressure following smaller in size,these mountains may form a lava below (also called "magma") database.This material uplift along the rift caused by an increase.Curitiba,the pressure of the lava above it is greater than the pressure on top of the rock,it has become a volcano burst out.Eruption,the hot gas,liquid or solid material up suddenly.Accumulation of these substances in the openings around the formation of a conical hill."Crater" is a cone of depression at the top,opening to the surface pass.Cone-shaped mountains are the product of volcanic formation.Volcanic material is emitted gases,but as a large number of Java volcanic rocks and ash and solid material are also out spraying.In fact,the volcanic rock is lava from volcanic eruptions,when lava rose to the height of near-surface,its temperature and pressure started to decline,there were physical and chemical changes,becomes a volcanic magma.