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Volcanoes

What Is A Volcano?

What Is A Volcano?
Reading Level
     edHelper's suggested reading level:   high interest, readability grades 5 to 7
     Flesch-Kincaid grade level:   5.12

Vocabulary
     challenging words:    crater, depression, cone-shaped, magma, violent, surrounding, fiery, collapse, works, liquid, different, form, however, molten, yellowstone, diameter
     content words:    Yellowstone National Park, United States

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What Is A Volcano?
By Patti Hutchison 		  
1     Volcanoes have different personalities. They can be violent and fiery. Or they can be quiet and flowing. Either way, they have characteristics in common.
 
2     A volcano begins deep below the surface of the earth, in a magma chamber. These are huge pools of hot, liquid rock. The molten rock is less dense than the solid rock surrounding it. It begins to make its way to earth's surface.
 
3     Magma pushes its way through layers of rock. It works its way through cracks, parting the rocks as it moves. Some of the rocks melt and become part of the magma. Finally it breaks through the surface. A volcano is born and the magma becomes lava.

Paragraphs 4 to 8:
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