Earthquakes are one of the most destructive of natural hazards. Earthquake occurs due to sudden transient motion of the ground as a result of release of elastic energy in a matter of few seconds. The impact of the event is most traumatic because it affects large area‚ occurs all on a sudden and unpredictable. They can cause large scale loss of life and property and disrupts essential services such as water supply‚ sewerage systems‚ communication and power‚ transport etc. They not only destroy villages
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EARTHQUAKES o Plates sliding pass each other create friction o Friction builds up creating stress (a force) o Force is greater than plate can withstand‚ budges and breaks‚ creating earthquakes o Release a lot of energy KEY TERMS Seismology- the study of earthquakes and their effects Seismometer/ Seismograph - equipment measuring the amount of ground motion caused by an earthquake ***Let’s do a demo*** Seismogram- record of ground motion produced
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2011 Christchurch earthquake From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search "Christchurch earthquake" redirects here. For other uses‚ see Christchurch earthquake (disambiguation). For the 13 June 2011 aftershock‚ see June 2011 Christchurch earthquake. February 2011 Christchurch earthquake | ChristChurch Cathedral and the Cathedral Square | Quake epicentre | Date | 22 February 2011 (2011-02-22)‚ 12:51 pm NZDT | Magnitude | 6.3 ML[1] | Depth | 5 km (3.1 mi) | Epicenter
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Definition: An earthquake is the result of a sudden release of energy in the Earth’s crust that creates seismic waves.TThe recent earthquake In India on September 18 ‚ 2011 compelled me to write an essay about earthquake. In this essay many things related to earthquake will be discussed.e seismicity or seismic activity of an area refers to the frequency‚ type and size of earthquakes experienced over a period of time. Measurement: Earthquakes are measured with the help of seismometers. The moment
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Introduction: The earth’s crust is made up of pieces of rock called plate tectonics that are always moving. Slowly sliding around‚ sliding past one another and bumping into each other. This constant movement causes pressure to build up between two plates‚ until it suddenly breaks were the plates meet. This is called a fault line. When the rock breaks energy is released in seismic waves that radiate from where the earthquake starts‚ a place called the focus. These Seismic waves are what cause the
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Plate tectonic theory is a widely excepted theory that the Earth’s lithosphere is made up of plates‚ both oceanic and continental‚ which slowly move due to convection currents in the mantle and the asthenosphere. However‚ it is very hard to be certain as we can’t see the structure of the Earth‚ so some people do not agree with it. This theory saw the introduction of what we know today to be tectonic plates. Tectonic plates occur where there is radioactive decay in the core and temperatures are extremely
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EARTHQUAKES Introduction and Terminology • Vibrations in the earth’s crust that occur when strain in the crust is suddenly released by displacement along a fault line • Focus = point at which an earthquake originates inside the earth. May be many km below surface • Epicentre = the point on the earth’s surface directly above the focus. Strongest shock normally felt here. Most damage usually occurs here. • Seismology = the study of earthquakes – from Greek – seio – to shake
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History of Earthquakes Throughout its prolonged history‚ the Earth has experienced a myriad of earthquakes that range from minor to major; some of the earthquakes had no fatal impacts while others were extremely catastrophic. However‚ these earthquakes were undeniably vital in shaping the modern world; without them‚ some magnificent landscapes that we see today would not exist. In the following paragraphs‚ we will be discussing the causes and effects of massive earthquakes‚ and exploring earthquakes
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2010 Chile earthquake From Wikipedia‚ the free encyclopedia For other earthquakes in and about Chile during 2010‚ see List of earthquakes in Chile occurring in 2010. 2010 Chile earthquake Epicenter of the 2010 Chile earthquake Date 27 February 2010[1] Origin time 03:34 CST (UTC-03:00) Magnitude 8.8 Mw Depth 35 kilometres (22 mi)[2] or 30.1 kilometres (19 mi)[1] Epicenter 35.909°S 72.733°WCoordinates: 35.909°S 72.733°W[2] or 36.290°S 73.239°W[1] Countries or regions Chile Max. intensity
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Earthquakes By: Kayla Marie Vargas Period 4 In earth science they talk a lot about different Earthquakes‚ volcanoes‚ the weather‚ different rocks‚ and etc. But never did you really get in details of what is any of them. Well I did research and found out that an earthquake which is also known as a quake‚ tremor or temblor is a result of a sudden release of energy in the Earth’s crust that creates seismic waves. The seismicity‚ seismism or seismic activity of an area refers to the frequency
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