An earthquake is a trembling or a shaking movement of the Earth's surface. Evidence and concrete detail The earthquake struck around lunch time, when many Japanese people were at … Earthquake Informative Speech Outline. ‘The high-quality seismicity maps showed that narrow belts of epicentres coincide almost exactly with the crest of mid-Atlantic (Ridge). Harrison, B. Foreshocks and aftershocks of an earthquake and the effects on society. Don’t waste Your Time Searching For a Sample, Get Your Job Done By a Professional Skilled Writer. But the earthquakes that occur at depths greater than about 100 km typically occur near margins where plates collide. The enormous mass of debris flow covered a distance of 15 km within few minutes and buried many buildings and human structures of Yungay town and killed about 25,000 people. Furthermore, Earthquakes can cause huge damage to life and property. Primary audience outcome: I want my audience to pay more attention to prepare the earthquake knowledge and rescue methods through I presenting facts of the earthquakes. The earth’s crust consists of 6 major plates (Eurasian plate, American plate, African plate, Indian plate, Pacific plate and Antarctic plate) and 20 minor plates. Earthquakes inflict great damage to human structures such as buildings, roads, rails, factories, dams, bridges, and thus cause heavy loss of human property. Brune, D. Fractures and ruptures within the earth. Type: The waves generated by an earthquake are called ‘seismic waves’ which are recorded by an instrument called seismograph or seismometer at the epicentre. These are further divided into four subcategories: (i) Volcanic earthquakes are caused due to volcanic eruptions of explosive and fissure types. Students looking for free, top-notch essay and term paper samples on various topics. This belt presents 4 ideal conditions for the occurrences of earthquakes viz. They result in unexpected and tremendous earth movements. The word earthquake is also widely used to indicate the source region itself. Essay Editing. Most earthquakes occur along the fault or fault plane where the tectonic plates collide or slide past one another. Water-saturated granular material (such as sand) temporarily loses its strength and transforms from a solid to a liquid. Even the earthquakes of Peninsular India have been related to the active faults below deccan traps. The education of students, 1 | Short Essay for Kids on Childhood Memories | Retrieved November 6, 2012 from http://www.crustal.usgs.info/outreach/faq.php The ground surface was greatly deformed in the delta area of the Indus River (in Pakistan) due to the earthquake of 1819 as an area of 4,500 square kilometres was submerged beneath sea water and this land area disappeared for ever. ⃝ 1. On the basis of magnitude of damage risk India is divided into five damage risk zones: 1. Content Filtration 6. But what are the risks of earthquakes in California? Essay on Earthquake. At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacement of the ground. The Kutch earthquake of June 16, 1819 generated strong tsunamis which submerged the coastal areas. which caused irreparable damage to human structures. Japan records about 1500 seismic shocks every year. Summary The 1934 Bihar earthquake measuring 8.4 and Good Friday Earthquake of March 27, 1964 in Alaska (USA) measuring 8.4 to 8.6 on Richter scale are among the greatest earthquakes of the world ever recorded. The underground surface along which the rock breaks and moves is called a fault plane. There are three types of boundaries that the pieces can, In this paper I will discuss what an earthquake is and what causes an earthquake. Type: This can be a devastating effect of earthquakes. Informative Essay On Earthquakes Los Angeles Notebook Essay. Earthquakes are known for how powerful and destructive they can be when it comes to “bringing the house down”. Examples, severe earthquakes caused by violent explosions of Krakatao volcano in 1883 and Etna volcano in 1968. The shocks generated by Peruvian earthquake of May, 1970 triggered off the collapse of ice caps seated on the peak of high mountain called Huascaran of 6654 m height near the town of Yungay in Peru. We love to remind good memories because they sooth our minds. The science, that deals with the seismic waves, is called seismology. Here one part of California moves north-eastward while the other part moves south-westward along the fault plane and thus is formed transform fault which causes earthquakes. (ii) The zones of faulting and fracturing. We can flip back and forth through time, learn the true expression of love and make friends that we never have to meet. An earthquake is a major demonstration of the power of the tectonic forces caused by endogenetic thermal conditions of the interior of the earth. Soil liquefaction may cause rigid structures, like buildings and bridges, to tilt or sink into the liquefied deposits. The 1934-earthquake of Bihar was also considered to have been triggered by faulting activity underneath. The waves generated in the oceans triggered by high magnitude earthquakes in the ocean floors (exceeding 7.5 on Richter scale), or by violent central volcanic eruptions, or by massive landslides of the coastal lands or of submerged continental shelves and slopes or in deep oceanic trenches, are called tsunami, which is a Japanese word meaning thereby harbour waves. A term people might be generally familiar with is epicenter which is the point on the surface of Earth directly above the focus, and the focus is the true center of an earthquake. Introductions Thesis statements Firstly, for what reason caused the earthquake? The solid earth is in slow but constant motion and earthquakes occur where the resulting stress exceeds the capacity of Earth materials to support it. Essay, 6 pages. Specific Purpose: To inform my audience of how Twitter has changed the way we communicate Such earthquakes are very severe and disastrous. These tectonic events caused by plate movements cause earthquakes in the northern and north-eastern parts of India. Today, I want to talk about the earthquake. An earthquake also referred to as tremor or quake is the trembling that happens on the Earth’s surface as a result of sudden energy release to the Earth lithosphere, therefore, developing seismic waves. The plain seismic region is a zone of comparatively moderate intensity. The seismic waves, caused by the earthquakes travelling through sea water, generate high sea waves and cause great loss of life and property. The severe earthquake of San Fransisco (USA), which occurred on April 18, 1906, caused widespread fires in several parts of the city. It is a basic tenet of the theory of plate tectonics that these deep earthquakes actually define the positions of sub-ducted plates which are plunging back into the mantle beneath an overriding plate. Thus, the earthquakes cause more damages in the areas of unconsolidated ground than their counterparts in the regions of solid structures and bedrocks. General Writing Modes Paper Grader. The epicentre of this earthquake was located near Bhuj town (population, 150,000). No, it was the result of the movement and collision of the earth 's tectonic plates - a process driven by the earth 's need to regulate its own internal temperature. Hazardous Effects of Earthquakes: It may be pointed out that the intensity of earthquakes and their hazardous impacts are determined not on the basis of the magnitude of seismic intensity as determined by Richter scale but are decided on the basis of quantum of damages done by a specific earthquake to human lives and property. “When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently, A large problem that comes with earthquakes is landslides. In school we did not participate in earthquake drills, and we were not, qualify someone as a hero. At that time, I was a 7th grade student and sit in class room, then, I noticed that the light on the ceiling began to shake slightly. Descriptive Granted, you will do much of your reading in textbooks over the next few years, but a sophisticated, college-educated reader must also be able to read, understand, and evaluate journal articles, editorials, blogs, biographies, histories, essays, scholarly books, and many other forms of written communication. Generally, when rocks experience brittle failure, a kind of energy called seismic waves are released from the point of breakage. (3) Mid-Atlantic Ridge Belt includes the epicentres located along the mid-Atlantic Ridge and several islands nearer the ridge. Within no time the villages and towns were flattened, high rise buildings collapsed, many villages and towns became heaps of debris, communication and power lines were completely disrupted, transport system was thrown out of gear and settlements became ruins. Uttar Kashi earthquake of October 20, 1991 and Chamoli earthquake of 29 March, 1999 (all in Uttaranchal of India) are latest examples. o Has correct spelling, capitalization, and punctuation. The 1950 Assam earthquake, 1934 Bihar earthquake and 2001 Bhuj earthquake (Gujarat) of India were caused mainly by faulting. It was measured as a 9.0 earthquake according to the Richter scale. Pandey (as reported in Hindu, September 8, 1988) the Indian subcontinent has deformed at places due to the Indian Ocean floor spreading process. In 2008 May 12th, it was the first time that I felt the earthquake which was a 7.8-magnitude earthquake happened in Wenchuan China. Report a Violation 10. Two major connecting faults have been located in Kutch region. 10.2) it appears that the seismic centres are closely related to certain zones of the globe. 4.9 These are smaller earthquakes that occur afterwards in the same place as the mainshock. These plates are constantly moving in relation to each Other due to thermal convective currents originating deep within the earth. Negi, P.K. The Bhuj quake of Jan. 26, 2001 was measured 6.9 on Richter scale by the Indian Meteorological Department (IMD) while the quake was measured 7.9 which was subsequently upgraded to 8.1 by the U.S.A. France and China. Prohibited Content 3. Causes And Effects Of Earthquakes (Essay Sample) 2018/01/12 by Sam Cause and Effect Essay Samples, Free Essay Samples. Speech Essay. Copying content is not allowed on this website, Ask a professional writer to help you with your text, Give us your email and we'll send you the essay you need, Please indicate where to send you the sample. Another problem with earthquakes is soil liquefaction. A landslide is a geological phenomenon which includes a wide range of ground movement, such as rockfalls, deep failure of slopes and shallow debris flows. I. The difference of energy from one magnitude to another is approximately 31 times. Similarly, the subduction of African plate below European plate and the subduction of Indian plate under Asiastic plate cause earthquakes of the mid-continental belt. It was a 7.9 on the Richter magnitude scale, killing over one-hundred and forty thousand people due to its high magnitude and the time it happened. The dictionary meaning of the word earthquake is “shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity”. For example, “more deaths in the 1906 San Francisco earthquake were caused by fire than by the earthquake itself” (Dimley, 2000 p. 29).
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