Volcanic eruption is how creates?Originally,the interior of the earth filled with hot magma.Under tremendous pressure,from weak magma will break through the earth's crust and,where spouted out,causing the volcano.
The volcano can be divided into active volcanoes,volcano and dormant volcano.Said before jotham boula volcanoes and the island of Hawaii volcanoes,now still in activity,this is active.Refers to the volcano in prehistoric had activity,but without eruption history records volcano.Within the territory of China,more than 600 volcano,mostly volcano.Some volcanoes in history have had activities of records,but later has not volcanic activities,which is called the dormant volcano.Dormant volcano may suddenly "wake up",becomes active.
猜你喜欢
- 1有两个电阻把它们串联起来总电阻是10欧并联起来是2.1欧 这两个电阻的阻值分别是多少?
- 2两圆x2+y2-4x+2y+1=0与x2+y2+4x-4y-1=0的公切线有_条.
- 3The manager has ____to improve the working conditions in the company.
- 4求一段英文电影对白
- 5How are you today Oh,I( )as ill as Ido now for a long time.
- 6中彩那天小练笔怎么写
- 7用3,-5,7,13算出24点
- 84分之3和100分之9的分数单位相差多少?
- 9Where would you like to go on vacation 作文 60~80词
- 10库房有一批货物,第一天运走5分之1,第二天比第一天多运8吨,还剩这批货物总重量的25分之14,