What is going to happen next What type of volcano is this Volcanic Eruptions Types of eruptions What determines how a volcano erupts
Fletcher, Herbie, Features Editor has reference to this Academic Journal, PHwiki organized this Journal What is going to happen next What type of volcano is this Volcanic Eruptions Natures pyrotechnics
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Types of eruptions Nonexplosive Explosive What determines how a volcano erupts The answer is viscosity! What is viscosity A fluids ability to resist flow. What changes the viscosity of a fluid Lets take a look. What is the connection with those three factors in addition to explosive eruptions
Why Explosive Silica rich magma = high viscosity Highly viscous magma traps gasses. Trapped gas = high pressure in magma chamber. Eventually the pressure is too much in addition to the vent is fractured in addition to all of the rocks are ejected as pyroclastic material. Rhyolitic magma Highly viscous Found at subduction zones because the magma comes from melted crust. Can lead to a caldera.
Andesitic Magma Medium Viscosity Volcanoes of in addition to esite have both pyroclastic material in addition to thick lava flows. Over time the pyroclastic flow in addition to lava create layers = stratovolcano. Basaltic Magma Low viscosity Move through the vents very easily. Gasses escape easily. Associated with divergent boundaries. Tend to as long as m thin layers of lava. Water in addition to Magma Explosion Common on isl in addition to s with volcanoes. Steam in magma exp in addition to s rapidly Erupts with great as long as ce Krakatoa 1883.
Lava Types High Viscosity = slow flow Block lava as long as med Lava Types Low Viscosity = fast flow, Pillow lava as long as med Lets examine our lab. Which lava had the greatest silica content Rhyolite Which lava had the greatest viscosity Rhyolite Which lava was most resistant to releasing gas Rhyolite
Fletcher, Herbie Features Editor
Fletcher, Herbie is from United States and they belong to Juice Magazine and they are from Los Angeles, United States got related to this Particular Journal. and Fletcher, Herbie deal with the subjects like Music; Skating and Skateboarding; Youth/Teen Interest
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