The volcanoes are the break of the earth surface, so magma,volcanic ash and gases escape from the crust of the earth. There are manyvolcanoes on the earth, almost volcanoes on the earth are found at the bound oftectonic plates, almost are unseen. But it can be find at the place that thetectonic plate gets thinner.Although they kill many people, but they can build the newlands for people. Example Surtsey, in 1963, near Iceland, when the sailors wereriding the boat, they saw the mountain with cloud of smoke and steam. They camecloser and witnessed the birth of a new island. Why can it make up a newisland? Because when the lava reach to the sea floor, the sea water cool thelava, turned it to the rock. This volcanic is the newest volcanic of the world.Hawaii and Iceland are also the two example of the volcanic island. Hawaii isstill growing because of the active of volcano. On the other hand, if the lavadon’t contact with sea water, it will run on the land and be cooled down by airto build up new surface.I really like to study about volcanoes. It has many interestingthings to learn. I will study more about it and write another report.