The Location of Volcanoes
There are about 2,500 known active volcanoes. Almost all of them are located together, in chains stretching across the earth. Many of these chains are thousands of miles long. Some geologists believe that this distribution related to a theory of the development of the earth’s surface called plate tectonics.
Mount St. Helens is a fart of the Ring of Fire, a circle of active volcanoes that surrounds the Pacific Ocean.
There are a lot more volcanoes under the sea than there …showed first 85 words of 237 total…
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…showed last 85 words of 237 total…from the sea floor.
The ocean floor is very thin and it can also be pierced by the magma that lies underneath, especially along the lines of weakness at plate margins.
Volcanoes are not found everywhere in the world. They occur mostly around the edges of the Pacific Ocean in a huge band called the Ring of Fire.
There are more groups of volcanoes in the east, Africa, Iceland, Southern Italy, and the Caribbean. There are even some in the frozen continent of Antarctica.
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