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Volcanoes
Types of Volcanoes



Types of Volcanoes
Reading Level
     edHelper's suggested reading level:   high interest, readability grades 6 to 8
     Flesch-Kincaid grade level:   7.26

Vocabulary
     challenging words:    silica, viscosity, basalt, topography, explosive, volume, violent, lava, material, circular, interesting, composition, differ, cone-shaped, base, eruption
     content words:    Mount Etna, Mount Saint Helens, Mauna Loa, Saint Helens, United States


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Types of Volcanoes
By Patti Hutchison
  

1     Mount Etna, Mount Saint Helens, and Mauna Loa are breathtaking sights. Volcanoes are interesting land forms, but they are not all alike. Some are tall and cone-shaped. Others have gently sloping sides.
 
2     A volcano's shape depends on how violent the eruption is. The material that forms the volcano also has an effect on its shape. The three basic types of volcanoes are cinder-cone, shield, and composite.
 
3     Cinder-cone volcanoes form from violent eruptions. Cinders and rocks explode high into the air. They rain back down to the surface and pile loosely around the vent. They form a cone with a narrow base and steep sides. Cinder-cone volcanoes are usually not more than 500 meters high. They can form on or near larger volcanoes.

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