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Volcanic Eruptions Directly Related
322 words2. There are three main factors that determine the nature of volcanic eruptions. Each factor has defined characteristics that can determine the effects of the volcano. The factors are the magmas composition, temperature and the amount of dissolved gases. Each of these affects the magmas viscosity, which is directly related to the nature of the eruption. The amount of silica content is directly related to the viscosity, as well. The composition of Mafic magma is about 50 % silica, which makes it ...
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Billion Years Ago Carbon Dioxide
1,230 wordsOur understanding and our modern perception of our solar system, the Milky Way, has been drastically reshaped from the corresponding perception of only a few hundred years ago. Our Solar System, the Milky Way is probably about 4 - 5 billion years old. Only in the last 400 years or so have we realized that the earth is not the "center", and that in the Universe alone there is an immense 200 billion "Suns" in a galaxy like our own. Although the origin of the solar system is uncertain, most scienti...
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Domed Rotunda 142 Feet Pantheon
627 wordsOnce an ordinary building in Rome originally built in 27 BC by the statesman Agrippa, now a wonder of the modern world. After two fires and 145 years, the emperor Hadrian built the dome and round hall, which the Pantheon is known for today. Around 128 AD, the Pantheon was finished, disregarding some minor alterations made in the early third century. The Pantheon stands elite, possessing appearance, size, and architecture of unparalleled equality. Lined with Corinthian columns, the porch of the P...
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Remarks On The Lost City Of Atlantis
1,095 wordsOver 11, 000 years ago there existed an island nation located in the middle of the Atlantic Ocean, populated by a noble and powerful race. The people of this land possessed great wealth thanks to the natural resources found throughout their island. The island was a center for trade and commerce. The rulers of this land held sway over the people and land of their own island and well into Europe and Africa. This was the island of Atlantis (Keyes page 1 of 4). Atlantis was one of many myths of Anci...
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Theories On The Lost City Of Atlantis
561 wordsAtlantis does it really existed? Is it really out there? If it is will we ever find it? These are all frequently asked questions when it comes to the lost continent of Atlantis. Many scientists have many theories on where Atlantis could be. Some ideas that are raised, are; Atlantis is in the South China see. Atlantis is in the Bahamas, and Atlantis is in the Atlantic Ocean. These are just a few ideas on where Atlantis could be, There are many other theories on Atlantis location. Many scientists ...
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Shield Volcanoes Plate Tectonics
1,406 wordsWhen there is a sudden breaking of rocks within the earth or an explosion, wave like energy travels through the earth and is recorded on seismographs. These are called seismic waves and they are of two types: body waves and surface waves categorized into different kinds. What we will be discussing are body waves; there are two types of body waves: primary waves (P waves) and secondary waves (S waves). Both kinds travel through the Earths interior in all directions and arrive before the surface w...
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Upper Saddle River Prentice Hall
888 wordsThe Earth is often referred to as the blue planet since it is seventy-one percent oceans and marginal seas with only twenty-nine percent comprising the continents and islands. There are three principal topographic features of the planets ocean floor: continental margin, ocean basin floor and mid-ocean ridge. The continental margin is the most extensive feature of the ocean floor divided into two kinds: a. ) the active continental margins which are primarily located around the Pacific Ocean with ...
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Miles Per Hour Natural Disasters
1,094 wordsNatural Disasters The natural disasters have existed since the world creation. The description of the first disaster, the Noah's Flood is given in the Bible. That was the Creators will to send the first flood to the man. Nowadays the natural disasters occur now and then in the various parts of the globe. Natural disasters are caused by the natural cataclysms. Natural phenomena may turn to a disaster. The disaster may be defined as Calamity caused by nature resulting in loss of life or destructio...
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Molten Rock Degrees F
715 wordsMy Journey to Iceland During my journey to Iceland, I have seen a natural event that made that journey very important to me. In southeastern Iceland, some 4, 500 feet above sea level, lies Vatnajokull -- the largest temperate-zone ice cap in Europe. Vatnajokull, 3, 200 frozen square miles overlying Iceland's most active volcanic region, sits, as does the rest of the island, above a mantle plume -- a column of hot rock that rises from the depths of Earth and feeds volcanoes with lava. Although it...
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Local Government Five Year
666 wordsThis report will Indonesia Indonesia This report will be on the History in Brief of Indonesia, the Government of Indonesia, the island of Java, and the Geography of Indonesia. In early days, the region from India to Japan, including Indonesia, was known to the Europeans as the Indies. Chris Columbus was looking for a westward sea root from Europe to the Indies, when he arrived in America. During 1600 s the Dutch political control began to spread Indonesia. Indonesia declared its independence in ...
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Coat Of Arms Costa Rica
832 wordsby Costa Rica Costa Rica by Brandon Noll Costa Rica's official language is Spanish. And nearly all Costa Ricans speak Spanish, but many blacks still speak a Jamaican dialect (local form) of English. About per cent of the people belong to the Roman Catholic Church. The basic money unit is the colon which is worth about a penny in the U. S. The total land area is 19, 730 sq. mi. In Costa Rica there are three main land regions: the Central Highlands, the Carribean Lowlands and the Pacific Coastal S...
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Environmental Protection Agency Ozone Depletion
1,137 wordsThe ozone layer diminishes more each year. As the area of polar ozone depletion (commonly called the ozone hole) gets larger, additional ultraviolet rays are allowed to pass through. These rays cause cancer, cataracts, and lowered immunity to diseases. 1 What causes the depletion of the ozone layer? In 1970, Crutzen first showed that nitrogen oxides produced by decaying nitrous oxide from soil-borne microbes react catalytically with ozone hastening its depletion. His findings started research on...
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Million Years Ago Millions Of Years
923 wordsReptiles Enjoyed Warm Arctic (Global Warming) An article written by ABC News writer Kenneth Chang discusses the change in climate of the arctic from ninety million years ago. Seven hundred miles from the North Pole, lies an island called Axel Heiberg, a barren land that scientists have dug up fossil bones of a cold-blooded reptile known as a champsosaur. How does this happen in an arctic, freezing land? How does a reptile that needs the warmth of the sun to survive, live in a frigid climate? Wel...
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Oceanic Crust Continental Drift
780 wordsPlate tectonics are a relatively new theory that has revolutionized the way geologists think about the Earth. According to the theory, the surface of the Earth is broken into large plates. The size and position of these plates change over time. The hypothesis of continental drift was largely developed by the German Alfred Wegener The edges of these plates, where they move against each other, are sites of intense geologic activity, such as earthquakes, volcanoes, and mountain building. Plate tect...
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Archaeology In The 21 St Archaeology In The 21 Atlantis
724 wordsLegends of the lost city The Future of the Past: Archaeology in the 21 st Century Eberhard Zangger 285 pp, Weidenfeld Eberhard Zangger explores our knowledge of the lands bordering the Mediterranean before the golden age of ancient Greece (yes, the title is a little misleading), and pushes the general thesis that archaeological orthodoxy currently has it all wrong. His first targets are catastrophist theories of cultural change in the region, ideas that have been widely disseminated in popular b...
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Time It Takes Surface Of Mars
1,058 wordsMars is the fourth planet from the sun at about 228 million-km (141 million miles) and the last terrestrial planet from the sun. The next five planets in order from the sun are gaseous. Mars follows closely behind Earth but is comparatively smaller, with about half the diameter of Earth and about one-tenth of Earth s mass. Thus the force of gravity on Mars is about one-third of that on Earth. Though it is much smaller, Mars does have the same surface land area as Earth. Other than Earth, Mars po...
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Volcano Began Erupting People On The Island Montserrat
552 wordsMontserrat is a volcanic island in the Caribbean. On the southern end of the island is the Soufriere Hills volcano. The volcano, which first erupted about 100, 000 years ago, has been dormant for centuries. The volcano took the islanders by surprise when it began to erupt again in 1995. Since then life on the island has changed greatly. Montserrat island is located in a 50 million year old subduction zone. This is an area where one of the earth? s oceanic plates is forced beneath a more buoyant ...
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Billions Of Years Volcanic Eruptions
367 wordsPlanet Earth is our home in space. It is a planet of continuous changes that started billions of years ago and that will continue for billions of years to come. Sometime the earth undergoes changes or movements that are rapid and effect our environment and safety. These rapid changes are known as natural disasters. These include earthquakes, volcanic eruptions, typhoons (hurricanes), tsunamis, floods, droughts, fires, and other events which are indications of interactions of mass and energy on t...
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End Of The World Southern California
968 wordsThe Y 2 K scare has gotten the entire world s attention with the radical headline that the world may come to an end. Although disputable, January 1 st 2000 or January 1 st 2001 is the deadline which electric appliances, computer databases, and many other necessities in our culture will cease to work. There is another date very little attention has been given, however. May 5 th 2000 has been speculated for many centuries as an important date for mankind. It is the day five of the nine planets and...
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Western United States Nuclear Waste
992 wordsYucca Mountain-Right or Wrong? As the United States nuclear waste buildup becomes larger, the need for a permanent storage facility becomes more urgent. One proposed site is in the Yucca Mountains of Nevada. This makes many Nevadans uneasy, as visions of three-legged babies and phosphorescent people come to mind. This is an unfounded worry, as many reasons prove. In fact, the Yucca Mountains provide an ideal site for a permanent underground nuclear waste facility in the U. S. While the Yucca Mou...
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