The two volcanoes from these events are called stratovolcanos‚ meaning they are volcanoes built up of alternate layers of lava and ash(citation)‚ and cone shaped. Neither of these volcanoes are shield volcanoes‚ which are broad‚ domed volcanoes with gently sloping sides‚ characteristic of the eruption of fluid‚ basaltic lava(citation). Both of these volcano’s had a huge impacts on humans‚ human structures and property‚ and had very high damage costs. The major Mount St. Helens eruption was on
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The Tambora Volcano occurred in Europe in 1815 and did not end until four months later. In fact it spewed so much gases and rock into the air that‚ by the time it stopped erupting‚ it had shrunk by 4‚200 feet. To date‚ Mount Tambora has sent more particles into atmosphere than any other volcano in recorded history. . Mount Tambora sits on island of Indonesia .in 1815‚ perhaps 50‚000 people lived on Sambaw ‚ a beautiful land of rushing streams gentle hills‚ and thick jungles. Looming over the northern
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Indonesia‚ the volcano named Tambora erupted with the most powerful eruption in recent history since the 1800s. Tambora had been dormant up to this point and had not erupted in five thousand years. The volcano’s horrible eruption‚ caused enormous amounts of destruction and its effects were noted around the world. It killed ninety thousand people around the world and it destroyed countless crops. The Europeans first found Tambora. They thought it was extinct. Tambora is located on the Indonesian
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Sadia khan Per 4 3/12/12 Volcano internet assignment 1. Three types of volcanoes are the shield volcano‚ Strato Volcano’s and cinder cones .The Shield volcanos are usually built entirely from lava flow they are name for their large size and low profile. The Starto’s volcano’s have steep sides with cones that stick out like huge bumps. They are built up when eruptions of viscous lava‚ tephra‚ and pyroclastic flows happen. The Cinder cones is a steep conical hill of tephra that accumulate
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Volcanoes Of the many natural forces which have defined the Western United States and Canada‚ volcanoes are among the most dramatic. Five of these natural wonders find their homes in National Parks‚ ranging from Hawaii to British Columbia. Their eruptions occur on mountains on the Ring of Fire‚ when one portion of the earth’s crust slides beneath another‚ and melts under high heat and pressure. Magma erupts from beneath the surface and cause lakebeds‚ mountain peaks and huge boulders.
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Volcanoes A volcano is an opening‚ or rupture‚ in the surface or crust of the Earth or a planetary mass object‚ which allows hot lava‚ volcanic ash and gases to escape from the magma chamber below the surface. The word volcano is derived from the name of Volcano‚ a volcanic island in the Aeolian Islands of Italy whose name in turn originates from Vulcan‚ the name of a god of fire in Roman mythology. The study of volcanoes is called volcanology. Divergent plate boundaries: At the mid-oceanic ridges
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where plates move against or over each other‚ or dive back below the surface. As the plates move‚ mountains are uplifted‚ the sea floor cracks and spreads‚ volcanoes erupt‚ and new land is formed. I think that volcanoes present the greatest challenges to human. And I will try to explain my point of view. As I have already mentioned volcanoes can form a new lands‚ without them we would not have Hawaii Iceland and many other most magnificent places in the world. On the other hand‚ volcanic eruptions
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VOLCANOES Volcanoes are pressure valves that release energy from deep within the Earth.Beautiful and powerful‚awe-insipiring and deadly‚they are spectacular reminders of the dynamic forces that shape our planet. Volcano - a fissure or vent through
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Volcanos are mighty mountains that rise from the ground but these beautiful beast come with a catch. When they “wake up” they can tear a whole island or town to pieces and pieces. Most volcanoes cause tons of destruction including flames and lava when awakened this roaring beast isn’t so peaceful. When volcanos form they form just like a regular mountains actually they are they are just regular mountains.That is why when they erupt it shocks many people because they all thought the possibility
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exaggerated): 1. Large magma chamber2. Bedrock3. Conduit (pipe)4. Base5. Sill6. Dike7. Layers of ash emitted by the volcano8. Flank 9. Layers of lava emitted by the volcano10. Throat11. Parasitic cone12. Lava flow13. Vent14. Crater15. Ash cloud Why do volcanoes erupt? Hot melted rocks collect under the Earth’s surface and when the pressure becomes too hard‚ the Earth’s skin breaks‚ and a volcano erupts. The melted rock inside the Earth is called magma‚ but when it comes out in an eruption‚ it is called
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