INTRODUCTION 1 HOW EARTHQUAKES OCCUR 2 Fault types 3 Earthquake fault types 3 Different types of Faults 3 Tidal forces 5 Earthquake clusters 6 Aftershock 6 Earthquake swarm 6 Earthquake storm 6 METHODS USED IN MEASURING EARTHQUAKES 6 The Richter Scale 6 The Mercalli Scale 7 HAZARDS CONNECTED TO EARTHQUAKES 8 MEASURES TAKEN TO MINIMIZE EARTHQUAKES 9 BIBLIOGRAPHY 11 INTRODUCTION Earthquakes are caused by the movement of the earth’s tectonic plates. Earthquakes occur where the earth’s
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Earthquakes An earthquake is a shaking or trembling of the crust of the earth caused by underground volcanic action or by the breaking and shifting of rock beneath the surface. The volcanic action and shifting rocks create strain which continues to build to a sudden release of pressure resulting in a shock wave. The vibrations produced in the crust can vary from barely noticeable to enormously destructive. Shock waves can be classified into two broad categories. Waves that send particles oscillating
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An earthquake (also known as a quake‚ tremor or temblor) is the 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‚ type and size of earthquakes experienced over a period of time. Tectonic earthquakes occur anywhere in the earth where there is sufficient stored elastic strain energy to drive fracture propagation along a fault plane. The sides of a fault move past each other smoothly
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Thesis: Earthquakes have been a natural part of Earth for many years and are caused by a shift in the Earth’s tectonic plates. Tectonic plates shift when two separated pieces of Earth’s crust push together because of the pressure of the hot air below them pushing up on the plates from the heat of the Earth’s core. This pressure must be released somehow‚ so when the pressure becomes too great for the plates to withstand‚ one part of a plate gives way to the pressure by rising above the other part
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EARTHQUAKE Introduction An earthquake is the result of a sudden release of energy in the Earth’s crust that creates seismic waves. CAUSE OF EARTHQUAKE Earthquakes are caused by the movement of the earth’s tectonic plates. Earthquakes occur where the earth’s plates meet along plate boundaries (see plate tectonics page for more information on this).For example as two plates move towards each other‚ one can be pushed down under the other one into the mantle. If this plate gets stuck it
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EARTHQUAKES DHORI: Cracks on a salt marsh can be seen on this aerial view of the epicentre of the recent earthquake near Dhori village some 20 km. (12 miles) from Bhuj in the western Indian state of Gujarat‚ Saturday Feb. 3‚ 2001. (AP Photo/Enric Marti) AHMEDABAD: Residents of Ahmedabad‚ India‚ survey earthquake damage Saturday‚ Jan. 27‚ 2001. Officials predicted as many as 6‚000 may have been killed in the 7.9 magnitude earthquake in western India on Friday.(AP Photo/Saurabh Das) The 2001 Gujarat
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Earthquakes are one of the most destructive natural disasters. It is when the stored energy beneath the Earth’s surface is discharged and shakes the ground. The impact of this event is one of the most traumatic ones because it can put long term effects on a large area. They are proven to be unpredictable but once it strikes‚ all in a few seconds‚ cities and towns are completely flattened. Continue on to discover more about this dangerous calamity. Did you ever know that the earth can also move
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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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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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