The idea of the continental drift was first though up by a man named Albert Wegener in 1912 but the idea of moving continents was not taking seriously until the 1960. This study is called plate tectonics‚ and it helps explain the continental drift‚ the spreading of the seafloor‚ why volcanoes erupt and how mountains are formed. The mountain range that runs from the northern tip of Alaska to the southern tip of South America were formed by the buckling of crustal rocks that crash into the edge of
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Maciej Frolow/ Photographer’s Choice RF/ Getty Images The Earth’s crust is an extremely thin layer of rock‚ like the skin of an apple in relative terms. It amounts to less than half of 1 percent of the planet. But the crust is exceptionally important‚ and not just because we live on it. The crust can be thicker than 80 kilometers in some spots‚ less than one kilometer in others. Underneath it is the mantle‚ a layer of rock some 2700 kilometers thick that accounts for the bulk of the Earth. The
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Born on February 22‚ 1732‚ in Westmoreland County‚ Virginia. One might say his journey to his leadership position began at birth as a North American. Washington served as a leader at his state militia. The continental congress asked George washington to serve as a commander-in-chief of the continental army. His well thought-out and clever tactics‚ as well as his superior knowledge of the land‚ and courage under fire‚ helped him
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he has this evidence that at some point all these continents were connected‚ but how did they split apart was the biggest question asked. He decided to publish a book that explained his thinking behind the theory of “continental drift”. Many didn’t buy a word of the theory “continental drift” that Wegener was trying to prove‚ the fact that he had no idea how the continents split‚ ripped‚ or in some fashion formed the present-day formation of what the earth is modeled like today was his most
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Merck & Co. * Compensation for exempt salaried employees at Merck has traditionally ranked among the top 25% of large US companies. * Progressive personnel policies and aggressive pay practices have contributed to high levels of employee loyalty‚ characterized by low turnover rates. * Performance Appraisal and Salary Administration program: supervisors rated employees on a scale from 1 to 5‚ with 5 designating exceptional performance and 1 indicating unacceptable performance‚ + and
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divergent plate boundary). Mid-Atlantic Ridge. 4. What are the three types of convergent plate boundaries? Oceanic-continental convergence‚ Oceanic-oceanic convergence‚ Continental-continental convergence. What two kinds of crust are involved in a subduction zone? Oceanic and continental. 7. What type of convergent boundary is the Himalaya Mountains formed by? Continental-continental. 8. What happens along a transform plate boundary? Result in earthquakes and possibly faults. 9. Name a famous
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evolution was some many millions of years before that. Geographical evolution came to be from the continental drift‚ and The Great Ice Age. The development of North America happened when people started moving to the Americas (Native Americans)‚ and When the European explorers/settlers clashed with the Native Americans. First and foremost‚ the geographical evolution of North America came to be from the continental shift. Some 225 million years ago all the continents were one whole together‚ known as the
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charge of the Continental Army‚ he had prior experience as a soldier during the French and Indian war. The reason why George Washington was selected to be the general of the continental army was because he was determined to the cause‚ was “vigorous and young enough to survive the long campaigns of a protracted conflict” ‚ and he was from Virginia. When choosing the leader of the continental army it was suggested that he was from Virginia because “To make the rebellion a truly continental endeavor ‚
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Valeria Delgado AP US History 5th Period Many elements influenced the American rebellion that lead to the American Revolution‚ specifically taxation‚ mercantilism and the First and Second Continental Congress. Mercantilism is an economic theory which argues that a nation must strive to attain a favorable balance of trade so that the country will accumulate gold and silver‚ which made the country wealthier and safer. In the Navigation Acts raw materials were taken from America and sent to the
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CRUST – OUTERMOST and THINNEST LAYER - ranging from 5 to 100 km. thick - upper part of the lithosphere - where people and other living things live - divided into the continental crust and oceanic crust CONTINENTAL CRUST – crust beneath the continents that has an average thickness of about 32 km. - the composition of the continental crust is similar to granite rocks OCEANIC CRUST – crust beneath the ocean - the oceanic crust has an average thickness is only about 8 km. thick MANTLE • • • • •
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