set of natural processes that lead to the formation and transformation of igneous‚ sedimentary‚ and metamorphic rocks. The rock cycle shows that each type of rock can change in a certain way to form another. The driving force of the rock cycle is plate tectonics. The transition to igneous is when rocks are pushed deep under the earth’s surface and may melt into magma‚ if there is no condition for the magma to stay in a liquid state‚ it will cool and solidify into an igneous rock. The three main
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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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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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expressing the likelihood of a given event. 18. Celestial Objects- All objects in the sky or outer space as observed in astronomy. 19. Gravitational Force The force of attraction between all masses in the universe- (P. 187) 20. Plate Tectonics- The theory that the Earth’s surface is broken into large‚ rigid pieces that move slowly over the
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fire have to do with plate tectonics? The Ring of Fire is a direct consequence of plate tectonics and the movement and collisions of crustal plates.What does the ring of fire have to do with plate tectonics?The "Ring of Fire" refers to a string of volcanoes‚ which create a ring in the Pacific. The relevance to plate tectonics‚ is that volcanoes are created by two plates coming together and pushing up on each other to create the volcano. The Ring of Fire is evidence of high plate tectonic movement in
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