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Effects of an earthquake essay
Impacts of an earthquake
Effects of an earthquake essay
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Geomorphic hazard: Earthquakes
Earthquakes are natural disasters that are also referred to as a ‘quake’ or ‘tremor’. It is classified as a geomorphic hazard, which are elements of the physical environment that can cause damage, (economically and environmentally) such as Volcanoes, Tsunamis, Landslides etc. Earthquakes have been around for thousands of years but no one had properly understood the concept. Not one person, but a crowd of geologists and scientists had discussed this hazard and identified what it actually. There have been some weird beliefs about earthquakes such as earthquakes were caused by air rushing out from caverns underground.
Css Forum.com.pk, 2014
An earthquake is the sudden shaking and vibration of the ground felt on the Earth’s surface, caused by the underground movement of tectonic plates. Basically, an earthquake occurs when there is a sudden release of energy under the earths crust, that is caused when tectonic plates become unstuck, break or push together. Earthquakes cannot be predicted, but nature does send us some warning signs such as foreshocks. A foreshock is a small earthquake that occurs beforehand the greater one, by a few days or weeks and occurs near or at the main site of the greater earthquake. Earthquakes also have aftershocks which are small earthquakes that follow the greater one, hence the name ‘aftershock’.
Earthquakes have a lot of effects on the environment and society such as people dying as a result of buildings collapsing because of the powerful seismic waves. In fact, in southern Italy 1909, more than half of the residents died from collapsin...
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- NESTA (2014). Can we predict earthquakes?. accessed on the 26th of March 2014 from http://www.planet-science.com/categories/over-11s/natural-world/2011/03/can-we-predict-earthquakes.aspx
- Victorian Government (2014). Earthquake facts. accessed on the 26th of March 2014 from http://www.ses.vic.gov.au/prepare/prepare-resources/earthquake-facts
- National Geographic (2014). Ring of Fire. accessed on the 27th of March 2014 from http://education.nationalgeographic.com/education/encyclopedia/ring-fire/?ar_a=1
- Geology.com (2014). World's Largest Recorded Earthquake. accessed on the 27th of March 2014 from http://geology.com/records/largest-earthquake/
- Earthquakefacts.net. (2014). Earthquake Facts. accessed on the 28th of March 2014 from http://www.earthquakefacts.net/Interesting-Earthquake-Facts.html
In 1910 a series of fifty-two earthquakes struck Arizona between September 10th-23rd and it caused much of the Flagstaff residents to flee the area as even strong households cracked and chimneys crumbled. The fifty-two earthquakes were all light-shock earthquakes with magnitudes between 4.0-4.2 that came right after another. If only one earthquake occurred in that timespan then it is likely that only objects would be knocked from shelves but no damage would be done to infrastructure, but the earthquakes happened right after another causing significant slight
Earthquakes are best described as a shaking or vibration of the ground caused by breaking of rock. Sometimes they are very strong and other times you would hardly notice them. This shaking occurs when stress that builds up in the crust is suddenly released as the crust breaks free and/or slides against the other pieces of crust. Earthquakes may also be thought of as the breaking of a popsicle stick by applying pressure to both ends at the same time. Should you try this experiment , you will feel the pressure build up as you apply more force until the stick snaps. When the stick snaps you will feel an instant of pain at your fingers as the stress reduces and energy waves move throughout the stick. When the earth's crust is placed under similar types of stress, binding as the stress builds, it will also snap and release the energy into the surrounding rocks, 'ooch'. Thinking about earthquakes will become more clear if you try another experiment.
Earthquakes play a major role into understanding the composition and materials that exist within the Earth (Merali and Skinner, 2009, p.252). Earthquakes are the main source of insight into the inner workings of the earth, due to the nature of the seismic waves they produce. P and S waves are reflected and refracted at different boundaries within the earth, and this enables seismologists to make inferences about the internal composition and structural of planet Earth. (Merali and Skinner, 2009, p.252).
Earthquakes, by Webster’s dictionary definition, are, “a shaking or trembling of the earth that is volcanic or tectonic in origin.” World Book Encyclopedia reports scientists believe that more than 8,000 earthquakes occur each day without causing damage. A little more than 1,000 each year are strong enough to be felt. Earthquakes occur in the general sense, anywhere on land. Other earthquakes go by different names, such as volcanic eruptions and tsunamis, large tidal wave storms that occur underwater, primarily in the Pacific Ocean.
Earthquakes in California are certainly not a surprise. What is a surprise is their unpredictability and randomness. Geologists say there is roughly a 50 percent chance that a magnitude 8 or more quake will hit the Los Angeles area sometime over the next 30 years. And, over the past twenty years, the Los Angeles area has witnessed several earthquakes, and in particular, two that were quite devastating; the 1971 San Fernando earthquake, and the January 17, 1994, Northridge Earthquake. Given the certainty that earthquakes will occur, they still seem to come as a surprise, and leave many communities unprepared to deal with their aftermath.
"The Great San Francisco Earthquake & Fires of 1906." The 1906 San Francisco Earthquake. N.p., n.d. Web. 10 May 2014.
Heller, Arnie. "The 1906 San Francisco Earthquake." Science & Technology (2006): 4-12. Web. 8 May 2014.
Smith, Dennis. San Francisco Is Burning: The Untold Story of the 1906 Earthquake and Fires. New York: Viking, 2005. Print.
...er caused the city to crumble and the government to pay extreme amounts of money. In addition, residents of San Francisco and other surrounding areas suffered as a result. Thousands died, but even more faced the encumbrance of homelessness. As if that could not worsen, fires went on afterward for as long as three days. Nevertheless, San Francisco transformed like a phoenix; its ashes turned into a beautiful city full of fascinating buildings in a matter of months. 1906, a year of a significant natural disaster, also became a year that spawned knowledge in the field of seismology. No one will ever forget the appalling chain of events that took place during the early twentieth century. The San Francisco Earthquake of 1906 has not only taught seismologists almost everything they now know, but it has also made San Francisco the jewel of the West Coast that it is today.
Hazards pose risk to everyone. Our acceptance of the risks associated with hazards dictates where and how we live. As humans, we accept a certain amount of risk when choosing to live our daily lives. From time to time, a hazard becomes an emergent situation. Tornadoes in the Midwest, hurricanes along the Gulf Coast or earthquakes in California are all hazards that residents in those regions accept and live with. This paper will examine one hazard that caused a disaster requiring a response from emergency management personnel. Specifically, the hazard more closely examined here is an earthquake. With the recent twenty year anniversary covered by many media outlets, the January 17, 1994, Northridge, California earthquake to date is the most expensive earthquake in American history.
benchmark for the future, and integrated investigation into the effects of earthquakes in the U.S.
The earth is split into four layers, inner and outer core, the mantle and crust. The top of the mantle and crust make up what is like the skin of our earth (see source 2). The skin is split up like a puzzle and we call these puzzle pieces’ tectonic plates (see source 1). These plates are constantly moving and the plate boundaries (edges of the plates) move and slide past one another. Sometimes as the plates move the plate boundaries become stuck. Pressure builds up in the stuck area over time and eventually breaks. This is why earthquakes occur due to the sudden movement of the plate sliding and breaking creating a fault line to go off. The fault line is the line on which the
Psychology is the study of the mind and the behavior of mammals. Geology is a science that deals with the history of the earth and its life, recorded in rocks. The earth is consistently moving its tectonic plates. Therefore, there may be over 100 earthquakes a day; most of these earthquakes go unnoticed by humans on the crust of the earth. Other earthquakes for example, the one in 2011 located in Japan and the Loma Prieta earthquake of 1989 (Earth- Marshak). Unfortunately, many people died in horrific ways during these deadly earthquakes, leaving thousands diagnosed with psychological disorders such as, Posttraumatic Stress Disorder and Specific Phobias directly related to the natural environment of the earth.
It was a beautiful day like any other with the clear blue sky and the
Earthquakes belong to the class of most disastrous natural hazards. They result in unexpected and tremendous earth movements. These movements results from dissemination of an enormous amount of intense energy in form of seismic waves which are detected by use of seismograms. The impact of earthquakes leaves behind several landmarks including: destruction of property, extensive disruption of services like sewer and water lines, loss of life, and causes instability in both economic and social components of the affected nation (Webcache 2).