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Lam Hoang

Facts about volcanoes

Posted by Lam Hoang Apr 26, 2014

How do you know about volcano ? Here are Top Ten interesting facts about volcanoes. Some of them, you have known and others you may not know clearly. Let’s read the following information to understand about volcanoes.

Although all volcanoes are made from hot magma that reaches the surface of the Earth, there are three different kinds namely Shield, Stravo and Cinder.

Cinder volcanoes are the most common type of volcano also called scoria cones. They may occur as single volcanoes or as secondary ones on the sides of Stravo volcanoes and shield volcanoes.

Stravovolcanoes are also called composite volcanoes because they are built of layers of lava flow, ash and blocks of stone. They are larger than cinder cones rising up to 8,000 feet.

Shieldvolcanoes are huge and are built of very thin lava spreading out in all directions from a central vent. They have lava flows which flow dozens of kilometers downward the sloping flanks.

Surely, you will be surprised when knowing that about 30 kilometers beneath your feet is the Earth’s mantle. This region contains superhot rock that can squeeze out and the huge bubbles of liquid rock are called magma chambers. This magma is lighter than other rocks and it is called magma when it is under the ground and lava when it erupts onto the surface.