composed of several giant plates called tectonic plates. On these plates lie the continents and the oceans of the earth. The continents were said to have formed a single mass at one point in time. From this single mass‚ today’s continents have "drifted" apart from each other over a period of millions of years. We pick up the story about 250 million years ago. During this time‚ all the earth’s land was a single super continent called Pangea‚ which was surrounded by a large ocean. Around 200 million years
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African-American slaves and condemned the existing slave-owning society (Burin‚ 2008). At the same time‚ instead of simply freeing slaves in the United States‚ the supporters of the colonization moved freed people back to Africa and established on African continent colonies for ex-slaves. This movement had both supporters and opponents. The Back-to-Africa movement was widely supported by both White and Black population of America. Anglo-Americans believed that slavery goes against their religious beliefs and
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a large continent in the Southerh Hemisphere. But Europeans had never seen it. They wondered what it was like and whether it inhabited. They called this land terra australis incognita 1 or «the unknown souther land» – Australia. Nowdays when people speak of Australia they can mean three things: 1) Australia as a continent; 2) Australia as an island and 3) Australia as an indenendent country. Australia is the world’s largest island and its smallest continent. Asia is the continent nearest to
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Australia Facts: Interesting Facts About Australia The Land Down Under is an anomaly in many regards. It is an island‚ a country‚ and a continent at the same time. Keep reading to learn some very interesting facts about Australia. Situated in the Southern Hemisphere‚ the Commonwealth of Australia comprises the continental mainland‚ the Tasmanian island‚ and many other smaller islands. One of the interesting facts about Australia is that the oldest skeleton found in Australia is reportedly more
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were either American or European. He went on to say that‚ his team was African because they were losers. Comments like these are very common in class and I am no longer offended when my students make such remarks. Truth is I cannot even defend my continent because many of the statements they make about Africa are true. I sometimes ask my students to explain certain things about their culture that I do not always understand. They always end their explanation with a simple statement‚ “Teacher‚ I am
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Julia Rabbia Geological Features Plate tectonics theory‚ which is the modern theory of the motions of Earth’s layer‚ explains how geological features‚ such as mountain ranges‚ continents‚ and bodies of water move and form. An important aspect of plate tectonics theory is that the outer layer of the earth is divided into plates which move across the earth’s surface. “These plates move relative to each other‚ typically at rates of 2-4 inches per year. As the plates move‚ they interact along their
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Once Christopher Columbus had discovered the New World many other European colonists decided to leave behind their old countries and take leave to the new continent. Many people had their different reasons for leaving‚ but often times it was due to religious freedom‚ lack of resources‚ trading‚ and simply to gain money. In many cases people fled to the New World for religious freedom since many religions were being ostracized. In Europe the Protestants and the Catholics began to fight over their
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Africa and eastern South America looked like the edges of interlocking pieces of a jigsaw puzzle. He was not the first to notice this‚ but he was the first to formally present evidence suggesting that the two continents had once been connected. Wegener was convinced that the two continents were once part of an enormous‚ single landmass that had split apart. He knew that the two areas had many geological and biological similarities. For example‚ fossils of the ancient reptile mesosaurus are only
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theory was developed people had noticed that the continents either side of the Atlantic Ocean seemed to nearly fit together. In 1912 Alfred Wegner published the theory of continental drift suggesting that the continents used to be joined together in an ancient supercontinent which he named Pangaea. He then proposed that it later split in to two continents- Laurasia in the north and Gondwanaland in the south‚ which further split forming our current continents and at some point these land masses had drifted
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1. Wegner’s hypothesis of continental drift using the observation that the earth’s surfaces are continually changing and other evidence was that the continents had once been joined‚ and over time had drifted apart but he couldn’t explain the mechanism behind it. 2. Evidence gathered by Ewing‚ Tharp and Hess that lead to the theory of plate tectonics was: ⦁ In the early 1950s Ewing‚ with the help of Marie Tharp‚ a cartographer‚ mapped the seafloor using available echo profiles‚ the resulting mapped
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