Continental Drift It takes a lot of courage to stand up for something you believe in‚ especially when faced with intense amounts of scrutiny and rejection from colleagues and peers alike. But this is exactly what Alfred Wegener experienced when he advanced the unthinkable thoughts that all continents were once upon a time‚ all part of one massive supercontinent. He battled through the adversity‚ and continued to collect sources and ideas that backed his thinking. The purpose of this paper is
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Exchange in the long run. The Columbian Exchange is astounding‚ to me it seems so crazy that cultures were meshing together and as a human population‚ we were becoming one unified race. Alfred W. Crosby describes the Columbian exchange as‚ "The seams of Pangaea were closing‚ drawn together by the sailmaker’s needle. Chickens met kiwis‚ cattle met kangaroos‚ Irish met potatoes‚ Comanches met horses‚ Incas met smallpox—all for the first time." America was not simply formed from dust. Overall‚ the Columbian
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As our science improved‚ we uncovered pieces of the world’s past and possible futures. Some past facts or beliefs; the Earth was born to what was known as the Big Bang Theory‚ and our continents used to be known as one giant super continent called Pangaea. The effect of science has gradually changed our way of thinking and increased our potentials. In my neighborhood‚ science is diverse. The children recycling in school and helping pick up trash helps our community stay clean and even bigger‚ helps
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key contribution to our planet’s history did Alfred Wegener make? A. He proposed a hypothesis that would account for the close “fit” of the shapes of the facing continents. His continental drift hypothesis required a preexisting super continent‚ Pangaea‚ which split into the continents of the world. 2. In what two ways have humans effected the earth’s environment during our presence on this planet? A. 1. Long before we became technologically proficient‚ we exterminated wild life by the millions
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Geology Final Exam Review Chapter 1 – The Earth In Context * Origin of the Universe (Beginning of the Universe) * Started with the “Big Bang” * Happened about 13.7 Billion Years Ago * Doppler Effect – all celestial objects move away from each other. Supports the “Ever Expanding Uinverse Theory” * Scientists noticed that all stars & planets are moving away from Earth which supports the theory that a massive explosion once occurred. (Big Bang) * Red Light
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Impacts from Space and Mass Extinction Events A. Understand the concept of a biosphere and Earth System Science and that the biosphere has evolved over time. -Mass extinction: a crisis that affects life right across the planet from the deepest oceans to the highest mountains -Biosphere: all life on Earth is a part of the biosphere‚ a thin layer of life that exists on the surface of the planet and that interacts with the hydrosphere (oceans‚ lakes‚ and rivers)‚ the atmosphere‚ and the lithosphere
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Waleed Smith AP Human Geography June 4th‚ 2015 Why Geography Matters More Than Ever Why Geography matters a book written by Harm de Blij a Dutchman born in Schiedam‚ Netherlands October 9‚ 1935. Mr. Harm received his Phd in geography from Northwestern University in Illinois‚ served as editor of several “National Geographic Magazine” articles‚ and was a renowned professor at Michigan State University. As a child‚ he moved from Europe to Africa to avoid the rising Nazi threat. While in Africa he
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human history. Debatable evidence has indicated that some of the early people may have reached America by makeshift boat‚ or arrived through travelling by foot. For these early humans to travel by foot‚ the continents once had to be connected. The Pangaea theory is the imaginary landmass that existed when all the continent were joined about 300-200 million years ago. The main connection between the continents was the Bering Strait. The Bering Strait‚ also known as the ‘Land Bridge’‚ connects Eurasia
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up of dense and mostly solid silicate rock * Lithosphere is the uppermost layer (100km thick) * Asthenosphere is the layer below the lithosphere (100km -660km) * Crust is thin silicate rock material on top 3. Pangaea is the proposed supercontinent that 200 million years ago supposedly began to shift apart and form our present continents. Alfred Wegener proposed this theory along with continental drift; Evidence he used includes matching fossils‚ rock types‚ and
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rise‚ cool and fall back down. This circular motion causes the plates‚ which float on the mantle‚ to move. In 1912‚ Alfred Wegener‚ a German meteorologist‚ was the first man to state that the continents were once joined in a super continent called Pangaea‚ conversely he couldn’t explain why and what happened to cause the plates to move apart. He based his theory on the extraordinary fit of the South American and African continent coastlines. Notably the eastern edge of South America and the western
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