between the crust and mantle. Crusts and Plates The crust is not the same thing as the plates of plate tectonics. Plates are thicker than the crust and consist of the crust and the shallow mantle just beneath it; the two-layered combination is stiff and brittle and is called the lithosphere ("stony layer" in scientific Latin). The lithospheric plates lie on a layer of softer‚ more plastic mantle rock (the asthenosphere or "weak layer") that allows the plates to move slowly over it like a raft in thick
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puzzle. Evidence for plate tectonics (http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/oils/changesrev3.shtml) b About fifty years ago‚ new evidence convinced scientists that the Earth’s crust is made up of tectonic plates that are moving very slowly. Give two pieces of evidence that have helped to convince these scientists that the tectonic plates are moving. The movement and separation of continents and Earthquakes are a result of plate movement. They are the sudden
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1. What: What plate boundary is it near? Great Rift Valley in Africa‚ which is the splitting of the African plate. 2. What type of volcano was it? Stratovolcano in the Virunga Mountains associated with the Albertine Rift. 3. Where: Where is the volcano located? It is located inside Virunga National Park‚ . 4. in the Democratic Republic of the Congo‚ about 20 km north of the town of Goma and Lake Kivu and just west of the border with Rwanda. 5. Where did the people move for safety? Rwanda
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Method and it will be discussed in detail below. 2.1.1 Rodac Method The purpose of this Standard Operating Procedure is to describe a program that will adequately measure the efficacy of disinfection of Rooms and equipment in each laboratory‚ RODAC plates can detect the presence or absence of live microorganisms (Longrée and Armbruster 1996). This Method is used to monitor the contamination level of personnel gowns and Personal Protective Equipment (PPE) before or during manufacturing production. The
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Blood agar plate‚ MSA plate‚ MAC plate‚ and the EMB plate. Before that we had done the 3 phase isolate which we had a possible of 10 points of achieving. In the isolation plate we had too take the sample of our unknown‚ which was the letter G. After we had done the 3-phase isolation plate we inoculated half of the plate‚ which was the S/D media. The Plate’s that we had provided too us were the BAP‚ MSA‚ MAC‚ and EMB. When we were successfully inoculated the S/D media the plates were put in
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towards providing that plate techtonics theory is valid. Discuss the extent to which you agree with the statement. (40 marks) Throughout close analysing we can see patterns in the occurance of seismic and volcanic activity worlwide. These patterns can be used as clues to help discover why such events occur‚ and it is clear that both volcanic and seismic activity is most abundant on and around plate margins. However despite there being a clear link between he events and the plate boundries does this
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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 showed a large canyon that traversed the length of the ridge. ⦁ Hess explains that as
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density. 3. Physical properties of aesthnosphere and lithosphere. You should have knowledge of the composition and physical properties of the lithosphere and asthenosphere. Asthenosphere-lithosphere relationship is important to understanding plate tectionics. 4. Evidence of compositional characteristics of the internal structure of the earth. -meteorites are inferred to be composed of same material that earth was derived -overall densisty of earth is 5.5 gm/cm3 density of crust 2.6-3
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Chapter 1: An Introduction to Geology What is geology‚ and what is the difference between physical and historical geology? Geology is the scientific study of the Earth and its major systems Physical Geology is the Study of the Earth’s composition. structure‚ and the processing that shape it Historical Geology is the Study of Earth’s history and the history of life With respect to why we study geology‚ in class I cited three areas of benefit to humanity where geologic knowledge is needed. What
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in poor living conditions. In line 9‚ Meeker tells of how “momma stood vacant eyed and hollow cheeked by hot suds” (Line 9). The mother waits until the children are outside‚ playing in the lot‚ before she “began to lick the crumbs from my sisters plate” (Line 19). Her daughter‚ Kayla‚ walks in the kitchen. She is “startled and dismayed by the animalistic actions/ of one so usually a lady” (Line 25-26). This describes the mother’s habits of hiding the tough times from her children. She apparently
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