Thursday, September 4, 2008

Fun Fasinating Features of Volcanoes

Volcanoes have many different types of features, some of which are popular and others, rare. Here are some of these features explained (what they look like, how they were formed, and the differences between them).

Here I will explain lava domes, Stratovolcanoes, and submarine volcanoes in short detailed paragraphs about each one.

Lava domes are formed by the continuous eruptions of lava. This slowly builds up and may eventually become taller. They are usually rounded from substances that lie in the magma which may cause them to be quite viscous. A very interesting feature of lava domes are where they can be found, as one of the places is right inside the Crater of an old erupted volcano, like in Mount Saint Helens.

Stratovolcanoes are formed by the contents of the volcano eruptions piling up on each other to form a cone shape. These volcanoes are made of lava, ash, and cinder. This occurs because the lava flows and then hardens, the ash and cinders are piled on together with the lava and then as the lava hardens, it hardens with all the other particles together. Some of these volcanoes can be very harmful to a person's health. One of the common examples of this volcano is Mt. Fuji in Japan.

Submarine volcanoes are very common, as they are found on the ocean floor. They lie on all different depths of the ocean, such as shallow water and very deeply submerged under water. When they are shallow, they can blast steam and rock above the water, spurring it in many directions. When they are deep underwater though, they do not erupt because of the pressure of the water pushing down on them. Sometimes these volcanoes deep underwater become so large, that they can come through the surface of the water and make an island.

That is all there is on volcanoes for today, but keep checking in, and there will be more coming soon. Thanks.

Steph

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