Review questions 1-10 Pages 146-147 1. Describe the three different kinds of material that can erupt from a volcano. Products of eruption come in three forms; lave flow‚ which can be Basaltic‚ Andesitic or Rhyolitic lava. A volcano also erupts pyroclastic debris (when lava flies into the air and freezes) and gases. 2. Contrast a pyroclastic flow with a lahar. Pyroglastic debris are blasting clots of lava‚ and the lahar are like mudslides that can reach up to 50km per hour. When the
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mountain in the world and one of the most active. It rises over 4 kilometers above sea level. Its coordinates are 19.4721 longatude and 155.5922 latitude. It is located in Hawaii. The 74.5 mile long volcano covers half of Hawaii. The massive volcano rises almost 2.5 miles above sea level. The volcano measures 56‚000 feet from its ocean floor base. One of the legends say that the goddess Pele was driven from her home by her sister. Every time Pele would thrust her digging stick into the Earth to
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VOLCANO DESTROYS ITSELF IN VIOLENT ERUPTION. After lying dormant for 123 years the build-up of pressure causes Mt St Helens to erupt violently. At least 57 people have died after the massive eruption of Mount St Helens volcano in Washington State‚ USA. Many more are missing and the death toll is expected to rise. A huge cloud of ash has turned day into night for towns and cities across north-western America. People have been told to stay indoors and wear gauze masks. Many roads have been closed
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around the volcano that erupted would having fertile soil for agriculture‚ it will also have valuable minerals found in the volcanic areas‚ examples are‚ copper‚ gold‚ sliver and more. The tourism rate of the volcanic areas will increase. And‚ there will also be a source of geothermal energy in the volcanic areas. The land around the volcanic areas will have fertile soil that is good for agriculture as‚ when there is a volcano eruption‚ there will be lots of ash thrown out from the volcano. This
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............................................ 9 OUTLINE PAGE I. Introduction Volcanic Eruption is harmful because it causes massive destruction to a place‚ suffocation and death. II. Body A. Definition 1. Produced by a volcano 2. Potentially explosive 3. Vent in the Earth’s crust B. Causes 1. Gases 2. Fragmental materials 3. Magma reaches heated area C. Effects 1. Destruction 2. Suffocation 3. Death D. Preparation
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gentle streams called lava flows or erupt violently into the air. Rocks ripped loose from the inside of the volcano or torn apart by the gas may be shot into the air with the lava. These rocks are blown out of a volcano and are called volcanic bombs. Along with these bombs dust‚ ash‚ lava and cinder are released into the air. Volcanic activity is classified by how often a volcano erupts. A volcano may be active‚ dormant‚ or extinct. Active volcanoes erupt constantly. Dormant volcanoes are inactive‚ but
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also known as Mount Calayo (/kəˈlɑːjoʊ/‚ literally "Fire Mountain") is an active volcano on the island of Mindanao in the Philippines. It is 4.5 kilometres south of the city of Valencia‚ province of Bukidnon‚ and 81 km southeast of Cagayan de Oro City BACKGROUND The low cone is grass-covered and andesitic-to-dacitic in composition. Musuan last erupted in Dec 1886‚ as a Jesuit priest reported who visited the volcano 4 years later in 1891‚ at which time there was still strong fumarolic activity‚ which
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As a volcano becomes active‚ it gives off numerous warning signs that are picked up by volcanologists; hundreds of small earthquakes are caused as magma rises through cracks in the earth’s crust‚ temperatures rise as activity increases and the volcano will start to release gases. The techniques available for predicting and monitoring volcanic activity are becoming increasingly accurate‚ and many volcanoes are constantly being monitored‚ such as Mount Etna. Anyone sharing a region with a volcano should
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with flow with high velocities. The pyroclastic flow that was seen at the eruption of Mount St Helens‚ USA in 1980 was a result of dense gas and ash combinations. It travelled a total of 25km north of the volcano and had a top temperature of 700’c. The flow was slowed down by ridges around the volcano but it contributed to a $450 million in damages to forestry. Tephra – the solid material that is ejected in a volcanic eruption of varying grain size (these can be volcanic bombs or ash) can often be
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“The Eruption of Mount St. Helens” On May 18th‚ 1980‚ in Washington State‚ the volcano‚ Mount St. Helens erupted. This eruption caused widespread terror throughout the towns surrounding the mountain. The magma from the volcano burned up the forest and killed most of the animals in the area. It affected the wildlife greatly because‚ after the eruption‚ the ecosystem was burned and smoldered thus killing thousands of animals in the region. This eruption was the deadliest of all the volcanic activity
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