How Volcanoes Work

here is a short video on how volcanoes are formed and also how they work and build up over the many years.

http://video.google.com/videoplay?docid=4469061453115836229&ei=YLsvSen3LKTgiAKthb3dDQ&q=volcanoes+genre%3Aeducational

How Volcanoes Are Formed

The earth is divided into 3 main layers. The core, the mantle and the outer crust. When 2 of the earth's plate boundaries diverse and converse. A new crust is formed on the earth's surface by magma cooling and solidifying. The magma from the mantle then works it's way up to the earth's crust, breaks through and erupts! The layers on the volcano build up over many years. The layers are made of ash, rock and lava that come out of the volcano.

picture from:http://www1.moe.edu.sg/learn@/Quest/winners/primary/yu_neng_pri_volcano_nc/xplopix9.gif

Introduction

hello everyone,

welcome to my blog on volcanos.
this is the spot to get great information and discuss volcanos!!! enjoy