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1、Volcano,Eruption,资勘 胡楠楠,Definition,Formation,Types,Distribution,Effects,请在这里键入你的目录内容,Menu,Definition,What is volcano eruption?,1,Originally,the interior(内部) of the earth filled with hot magma.Under tremendous（巨大的） pressure,weak magma will break through the earths crust （地壳），causing the volcano.,A vo
2、lcano is an opening ,or rupture（断裂）,in the surface or crust of the Earth or a planetry mass object ,which allows hot lava ,volcanic ash and gases to escape from magma chamber below the surface.,some words about volcano,Lava 岩浆,volcanic ash 火山灰,Molten fluid formed in the depth of the earths crust,Rub
3、ble and mineral particles with a diameter less than 2 mm,Formation,2,1,2,火山机构当中与主要岩浆通道相连的火山中央喷口,main vent,火山口;陨石坑;,crater,Types,3,classification,Active volcano,extinct volcano,dormant volcano,Distributon,4,Effects,5,Harm,Benifits,Many of the volcanic materials have important industrial and chemical uses.,salt and minerals after an eruption of a volcano,Benifits,Volcanic ash that has weathered greatly improves soil ferility.,Benifits,Amazing scenery.,林查尼 火山,布罗默 火山,Finish,Thanks!,
