Volcano Essays

Volcanoes Risks and Benefits

The term volcano can either mean the vent from which magma erupts to the surface, or it can refer to the landform created by the solidified lava and fragmental volcanic debris that accumulate near the vent. One could say, for example, that large lava flows are erupted from Kilauea volcano in Hawaii, the world volcano here signifies a vent. Volcanoes are not the realm of any single scientific discipline. Rather they require study from many scientists from several specialties: Geophysicist…

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Volcanic Eruption_ a Life Taker or a Life Saver

As the world’s population grows, more and more people are living in potentially dangerous volcanic areas. Volcanic eruptions continue to happen and they can cause great threats to life and property. Predicting a volcano’s eruption accurately will lead to more saved lives and ensure our safety. When a volcano erupts it produces many threats. Some of these threats are lava flows, falling ash, and they may even cause other threats like mud and debris flows, or they can cause the…

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Endogenetic Process

The Endogenetic processes are the processes that shape the land by forces coming from within the earth (Endogenetic forces). There are 3 main Endogenetic processes: folding, faulting and volcanism. They take place mainly along the plate boundaries, which are the zones that lay on the edges of plates. These zones are weak. Endogenetic processes cause many major landform features. MOVEMENTS: The forces coming from within the earth cause two types of movements in the earth. (1)Horizontal movements (2)Vertical movements These…

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Seven Natural Wonders of the World

Have you, ever wondered, or just thought for a second about what Mother Nature has provided us with? Including all her extraordinary, mind boggling wonders that are present on our very own planet Earth? Have you ever thought about where you would like to go to explore or just too purely indulge in what nature has to offer? Every day, we normally do the routine things that we do in life like, going to school, occupying our occupations and simply…

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Montserrat Volcano Eruption 1995

Ten years past since the abrupt eruption of Soufriere Hills volcano on the island of Montserrat leaving locals and tourists devastated. (Date) marked the day of when the said to be inactive volcano erupted. Due to a partial collapse of the dome the volcano’s crater, loads of ash, hot gases, and rocks was shot out approximately 15 km into the sky. From this, many sirens were triggered and a massive evacuation took place. No lives were taken. Although, major damage…

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Interpreting the History of Volcanoes and Volcanic Rocks

Drawing from the diagram, the volcanic history is as outlined below and other relevant details are also supplied. 1.0 Sequential summary of volcanic history the area a. Andersite porphyry: this is the oldest. Andersite indicates magma of intermediate composition. Its silica content is midway between felsic rocks (having high silica content) and mafic rocks (having low silica content). Its formation is a two-step process where slow cooling occurs at the initial stage within the crust forming large crystals as a…

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Volcanoes Paper

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 which molten rock material, or magma, and gases from the interior of the Earth erupt on to its surface, and the landform which is produced as a result of this eruption. The word “volcano” comes from Vulcano, one of the volcanic Lipari Islands in the Mediterranean…

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The Effects of Volcanic Hazards

To what extent can planning and preparedness mitigate the effects of volcanic hazards? A hazard is a situation that poses a level of threat to life, health, property, or environment. There is a very big difference that helps prepare for a volcanic hazard and that is whether you are in a MEDC or a LEDC. In a MEDC monitoring volcanic zones and potential hazards is an option many LEDC’s don’t have. In Italy at Mt Etna they have Geochemical monitoring…

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Erupted Material

Another way of classifying volcanoes is by the composition of material erupted (lava), since this affects the shape of the volcano. Lava can be broadly classified into 4 different compositions (Cas & Wright, 1987): * If the erupted magma contains a high percentage (>63%) of silica, the lava is called felsic. * Felsic lavas (dacites or rhyolites) tend to be highly viscous (not very fluid) and are erupted as domes or short, stubby flows. Viscous lavas tend to formstratovolcanoes or…

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The Importance of Pompeii Today

QNo1:1a: The volcanic eruption results in the loss of people’s life and home making their families helpless and homeless. Sometimes it destroys the village under the ash or lava. 1b: On the 24th August in the year AD 79, the people of Pompeii were going about their business in the usual way. Suddenly it grew dark a great was leaving the top of mountain. The people of Pompeii started to run out of the town, but more than 2000 of…

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Underwater Volcanoes

Submarine volcanoes or underwater volcanoes, come in all shapes and sizes and, are found across the world from Hawaii and California to Iceland, Japan, New Zealand and Antarctica. Worldwide, there are an estimated 5,000 active submerged volcanoes, with the highest volcanoes in shallow water rising above sea level. Most submerged volcanoes, however, are located on ocean ridges. Volcanoes are dangerous, but when compared to land volcanoes, submarine volcanoes pose less of a threat to human life. Since the volcano sits…

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The Nature of Volcanic Hazards

Events that cause death, injury and damage to property and infrastructure are known as natural hazards. Volcanic eruptions can swiftly become natural hazards which can quickly lead to major loss of life and widespread damage. Primary hazards that are associated with volcanoes include; pyroclastic flows, Tephra, Lava flows and volcanic gases. Pyroclastic flows are waves of very hot gases and tephra with flow with high velocities. The pyroclastic flow that was seen at the eruption of Mount St Helens, USA…

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Vulcanicity Case

Volcanoes mostly occur at plate margins. They can also occur at hot spots and in rift valleys. The most active volcanic zone is the Pacific Ring of Fire around the Pacific plate. Here plates are colliding or separating. At active points on these plates volcanic mountains are formed, e.g. Nazca Plate and South American Plate, where plates separate, e.g. Pacific and Nazca Plate and in rift valleys, e.g. African Plate, Kenya. The most active area on the globe is the…

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How Volcanoes Came to Be

Hephaestus god of blacksmiths and fire wanted revenge on all the villages that used his gift of metallurgy for war and killing so he went up to Zeus to ask him for a way to devastate their population. Zeus thought for a while and decided to give him the deserted mountains on the others side of the valley and let him chose what he wanted to do with them. “I’d like to make them burst into an explosion of liquid…

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