Cause and Effect A volcano erupts when magma escapes from inside the earth. As the magma is escaping from a confined space‚ a lot of energy is released with it‚ as happens with any other explosion. This is why many eruptions also produce huge quantities of gases and dust. Magma sometimes rises under enormous pressure‚ so it not only finds cracks in the earth’s crust‚ it can also create them. When magma reaches the earth’s surface it is called lava. An eruption is caused by lava escaping
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A study of VOLCANIC ERUPTION In partial fulfilment of the group research project TABLE OF CONTENTS Title Page.................................................................................................................... 1 Table of Contents....................................................................................................... 2 Outline........................................................................................................................ 3 Introduction
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The 8 most common elements in the earth’s crust are Oxygen‚ Silicon‚ Aluminum‚ Iron‚ Calcium‚ Sodium‚ Potassium‚ & Magnesium. They compose 98.5% of the total crust. A mineral occurs naturally‚ is a soli‚ inorganic‚ has chemical composition and a crystalline structure. Native minerals are single elements. Compounds are 2 or more. There are more compound than native. You can identify minerals by color‚ streak‚ luster‚ hardness‚ cleavage‚ and fracture. Minerals form by magma erupting and
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The Movement of Plate Tectonics Brandon Womac Plate tectonics have played a major role in the history of the Earth. All seven continents are where they are today due to the movement of plate tectonics. These seven continents were one big supercontinent called “Pangea” about 200 million years ago before breaking apart. The three different types of plate boundaries are convergent‚ divergent‚ and transform. These plate boundaries form due to the earth’s outer shell called the lithosphere having multiple
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Dear Principal‚ I really would like to visit Lava Beds National monument located in northeastern California. It holds many new learning experiences‚ many new sights to see‚ and possibly might change their career. A surreal landscape sculpted by molten earth‚ Lava Beds National Monument contains volcanic tablelands punctuated by cinder cones and spatter cones‚ plus more than 700 caves. These strange features were formed when the outer edges of flowing lava began to cool‚ forming tubes. When
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Grímsvötn volcano is located near the center of the Vatnajökull ice cap in central Iceland. At a height of 5658 feet‚ it has the highest eruption frequency of all the volcanoes in Iceland. Grímsvötn volcano has a complex of calderas‚ of about six by eight kilometers in area‚ and a subglacial caldera lake sustained by geothermal heat. A caldera‚ a large‚ circular depression at the summit of a volcano‚ is formed when magma is withdrawn or erupted from a shallow underground magma reservoir. The caldera
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THE Types of volcanoes There are three types of volcanoes shield‚ cinder cones and composite volcanoes. Shield volcanoes are large volcanic Forms with that are broad at the top and have low‚ sloping sides. This type of volcano is caused by slow‚ basaltic lava flows. Cinder cones are cone shaped volcanoes some are no more than a few meters and others get as big as high as 610 meters sometime more. Most of the tallest volcanoes are composite volcanoes. These form from quiet eruptions of fluid lava
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Analyse the factors that cause differences in the hazards caused by volcanoes around the world (40 marks) A hazard is defined as something which has the potential to kill or cause harm. However a hazard is only a risk to people if they are exposed to it. This is when a hazard can cause disasters. For example‚ a volcano is only a hazard if the population comes in contact with the consequences of its activity. Hazards and their likeliness to become disasters can depend on many different factors‚ for
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The Earth - it’s an intricate formation of land and sea‚ rock and metal‚ but how can the movements of the continents be explained‚ or how do deep ocean trenches affect us? The three main theories that explain how these things work are sea-floor spreading‚ continental drift‚ and plate tectonics. These are the theories that give us explanation as to why the continents move‚ how plate tectonics work‚ etc. These theories were formed by different scientists and with different forms of evidence‚ some scientists
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Icelandic Eruption Spews Record-Breaking Amounts of Lava‚ With No Signs of Slowing National Geographic- The article is talking about how a large amount of lava daily is gushing out of the Baroarbunga volcanic system on a plain made of old lava. The lava has spewed out a huge amount: it can bury the size of an NFLfootball field every 5.5 minutes as well as fil 740 empire state building. Luckily‚ no one lives near the growing lava flow but the many scientists that are stationed there‚ complete with
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