create new plates by splitting old ones apart. A rift is defined as a fracture in the earth’s surface that widens over time. A more technical definition for a rift is an elongated basin bounded by opposed steeply dipping normal faults. Geologists continue to debate exactly how rifting occurs. They do believe the process is so well displayed in East Africa‚ having given the new plate to be a name. The name is the Nubian Plate. The Nubian Plate makes up most of Africa‚ while the smaller plate that is
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1. Identify all of the types of plate boundaries that are associated with active volcanism. a. Divergent b. Convergent 2. Identify all of the different observations Alfred Wegener used to support his theory of continental drift. a. Fossil distribution b. Match of mountain belts among North America‚ Europe‚ and Greenland c. Fit of continents‚ matching rock units d. Glacial deposits (moving away from Antartica) 3. Identify all of the different observations used to support Harry Hess’ theory
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15-20 million years. What Is It? Scientists have learned that the Earth’s crust is fractured into a series of "plates" that have been moving very slowly over the Earth’s surface for millions of years. Two of these moving plates meet in western California; the boundary between them is the San Andreas fault. The Pacific Plate (on the west) moves northwestward relative to the North American Plate (on the east)‚ causing earthquakes along the fault. The San Andreas is the "master" fault of an intricate fault
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1. Summarize advances over time in determining the age of the Earth‚ including the importance of the discovery or radioactivity. Herodotus counted layers of earth near the Nile River in 450 B.C.E. The Bible was used in the Middle Ages to compute the age of the Earth. The 18th and 19th centuries brought a more scientific look into determining the age of the Earth by studying the salinities of the oceans‚ the rates of sedimentation‚ and models of cooling of different materials in order to calculate
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bacteria‚ the first step was to isolate each bacterium using streak plate technique. Tryptic Soy Agar (TSA) plate‚ and differential media such as mannitol salt and Eosin methylene blue (EMB) were used for isolation streak technique. This step is imperative because the bacteria need to be separated and isolated before they can be identified. Moreover‚ gram staining was used to understand the basic morphology of these bacteria. As these plates were incubated and grown‚ the presence of two separate bacteria
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Asian Tsunami Project Introduction I’m going to talk about a tsunami which hit many places in Asia and some parts of Africa which left many homeless and Thousands dead. Introduction I’m going to talk about a tsunami which hit many places in Asia and some parts of Africa which left many homeless and Thousands dead. A tsunami is a giant wave of series of waves usually caused to be a volcanic eruption or earthquakes o the seabed. As the Tsunami travels through deep water‚ the wave may
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side because the mountains block the flow of water to a certain degree. The mountains that define the whole park and offer a variety of life‚ along with the beauty that comes with it‚ were formed by the collision of tectonic plates. The North American plate and the Pacific Plate have been colliding for millions of years and they have shaped the unique terrain of Denali National Park. Glaciers have also left their mark on the land‚ making craters and valleys. The Park is made up of many types of rocks
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Geography 241 Review for Cumulative Final Short essay‚ i.e.‚ ones worth 2 pts on the exam - 3/ 4 sentences Medium‚ i.e‚ ones worth 4 pts - 6 sentences Long‚ i.e.‚ the 2 or 3 worth 6 pts on the exam - 8 - 10 sentences Keys: 1. 2. Use examples and locations to help define key concepts Prepare each essay by first recognizing its appropriate length Ch 1 – Introduction (M) Define geography? What is a geographic perspective? How is it unique from others? (See book and lectures) 1. GEOGRAPHY-
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edu/~lstrayer/geol2101/2101_Ch19_03.pdf Paleontology and Geology glossary. (1996). Retrieved 2010‚ from Enchanted Learning: http://www.enchantedlearning.com/subjects/dinosaurs/glossary/Contdrift.shtml Plummer‚ C. C.‚ Carlson‚ D. H.‚ & Hammersley‚ L. (1937). Plate Tectonics. In C. C. Plummer‚ Physical Geology (pp. 485-86). McGraw Hill.
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were hooked up to IV’s by relatives. Scientists believe that mostly earthquake occurs due to the movement of plates and this theory is known as plate tectonics. This says that earth’s outer crust has ten rigid‚ hard and large plates‚ twenty small plates. These plates are continuously moving on the hot and soft rock of mantle slowly. This movement causes collision among other plates which further causes stress on the lithosphere. The stress becomes enough to shift or break crust. Now the stress
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