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We have three 6th grade Science classes and two 8th grade Science classes blogging here from the Pacific Northwest in Chimacum, WA! Sixth graders are learning a bit about Mt Saint Helens, environmental science through fresh water ecology, and physical science this year. Eighth graders are learning about life science this year. Please join us as we learn Science by exploring our world.
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Cool amazing facts about Volcanoes and Lava

Three types of volcanoes are:


1. Composite volcanoes which are, ten thousand ore more feet high. They are considered a Hollywood type of volcano, they are also the large size of ten miles across.


2. A Cinder Cone volcano, they are pretty small volcanoes. The amount of lava is close to none, this volcano also has very grainy cinders.


3. A Shield volcano, they are mostly found in different parts of Hawaii. It is a very wide volcano and is also thousands of feet high. The kind of the Shield volcano has the biggest volcano in the world.


Three kinds of lava are:


1. The Low Water/Low Silica lava is mostly a pretty runny lava type, so technically it has a lot of viscosity. It is not runny like water but more realistically like hot honey or hot wax.


2. The High water/High silica because of its dissolved gasses and its high velocity is deadly. As the lava ooze's to the surface, the gasses quickly become bubbles.


 


3. High water/low silica lava shows behavior's that are similar to our analogies of blowing bubbles in water or a milk shake. If an erupting volcano has low velocity (like water) it flows out of the central surface.


Hope you enjoyed!!


~Deidra Morris~

Article posted November 3, 2009 at 10:29 PM • comment (1) • Reads 1964 • see all articles


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