Essay On Earthquakes

In Valdivia, Chile 1960 an earthquake changed the lives of many. An earthquake is the violent shaking of the ground that will destroy homes, buildings, landforms, historical monuments, and lives. Earthquakes begin with the breakage of rock along a fault line. When two tectonic plates rub against each other they create an earthquake. Earthquakes will ride along a fault line which will determine how long the quake will go on. The larger and longer the fault like the bigger the earthquake. Earthquakes send out waves, primary waves or, p waves and secondary waves or, s waves travel along the interior of the earth. These two waves are called body waves. While detecting the waves, the primary waves appear first then the secondary waves. Primary waves travel through solids, liquids, and gasses, which means they are about to travel through the liquid center. Secondary waves are only able to travel through solids which are why scientists have found that there is a loss of these waves once they reach the center.

Long-term impacts Disease may spread. People may have to be re-housed, sometimes in refugee camps. The cost of rebuilding a settlement is high. Investment in the area may be focused only on repairing the damage caused by the earthquake. Income could be lost. Important natural and human landmarks may be

Of all the naturally occurring events on Earth, earthquakes are among the most devastating and bring a lot of truth to the statement, “Just because something is natural does not mean it is not dangerous.” Earthquakes are one of the most natural things I can think of that can cause massive damage and loss of human live in many instances, and the effects are sometimes long term. “Nothing happens without a force. Many geophysicists accept the theory that continents move as a result of the forces generated by mantel convection deep within Earth – motions driven by our planet’s internal heat energy” (Trefil & Hazen, 2010). According to National Geographic (1996-2012), constant movement in the tectonic plates that make up the Earth’s

People respond to a natural disaster by gathering resources. There has been so much change by just getting people household materials. We have provided at least 10,000 families with resources(Doc A). Although some people are able to get resources, there are still thousands of people that haven’t been reached. They are getting better at gathering resources and delivering it to remote locations that cannot be easily gotten to.

"U.S. taxpayers will cover seventy-five to a hundred per cent of the damages"(Schulz). A large effect of the earthquake will be damage to "Oregon's critical energy-infrastructure hub, a six-mile of Portland through which ninety per cent of the state's liquid fuel and which houses everything from electrical substations to natural-gas terminals" (Schulz).

On October 15th an earthquake killed nearly 90 people. In the Philippines killed nearly 200 and displacing tens of thousands of dollars. The quake wrecked about more than 45,000 homes. These earthquakes have affected many people, damaging homes and even lives and causes millions of dollars for repairs. The quake, the strongest to hit the disaster-prone country in recent years, struck Bohol on October 15th. Felt across several neighbouring provinces, more than 2,500 aftershock have rippled through the region since.(Documents

Imagine yourself home doing a couple of sets of jumping jacks but then you feel weary so you stop for a water break. You notice that you kept on bouncing but it wasn’t your body moving it was the Earth that was shaking you, an earthquake occured. Earthquakes happen when the underground continental plates move. Earthquakes can affect the Earth, people, and property. To begin with, when an earthquake happens something on Earth is most likely to change.

Earthquakes are caused when two blocks of earth suddenly slip past one another. The surface where the two blocks slip is called the fault. The earthquake starts below the earth’s surface at the hypocenter, and the location above the hypocenter is called the epicenter. Earthquakes can have foreshocks which is a smaller earthquake that happens before the larger quake. Earthquake can also

An earthquake happens which causes cracks in the ground. The cracks open wide from the pressure of the buildings. Then the buildings fall through; with people left with no home, work, etc.

Critical incidents require immediate action (Levinson & Granot, 2002). Additionally, they also require ongoing support in order to ensure that they are correctly managed and the long-term effects are mitigated (Schneid & Collins, 2001). Addressed here are four specific events - earthquakes, floods, hurricanes, and tornados. There are ways to mitigate the damage of these events, and there are also ways to try to prepare for them. Additionally, the type of response to these events is important as is the recovery from them. For earthquakes, mitigation is limited. It is possible to build houses and buildings stronger and more able to withstand shaking, and in earthquake-prone areas the cabinets often have latches and large appliances are strapped to the wall (U.S., 2007). People who live there should also have emergency supplies of food and water, and should be prepared for an earthquake by knowing information about evacuation routes (U.S., 2007). The response to earthquakes and the recovery from them are usually strong, because the areas that are most prone are also most prepared. When an earthquake hits in an unusual area, however, it can take much longer to help people and to rebuild the infrastructure.

For example a political impact was that the mayor of San Francisco illegally ordered a “shoot to kill” for the military to stop citizens from looting stores that got affected from the earthquake, because after the fire settled down many people went to loot the stores. The army also pressed people to help work and fix the city at gunpoint. (Picturethis.muesem.org) (popularmechanics). According to www.sf-info.org another economical impact of this event is that the earthquake destroyed about 80% of the city. The overall cost in damages from the earthquake came to be $500 dollars in 1906 which is about 9.5 to 10 billion dollars, but luckily San Francisco was able to rebuild its city back up

An earthquake would be classified as a sudden ferocious shaking of the ground, typically causing great obliteration because of manoeuvre within the earth’s crust or volcanic action.

The energy originates from the hypocenter which is usually deep below the earth’s surface. The epicenter is exactly above the hypocenter. There are three types of waves which occur during an earthquake: compressional (P) waves, seismology (S) waves, and surface waves. There are four different types of fault lines which include: normal faulting, reverse faulting, and strike slip, oblique slip. Earthquakes have different consequences on different landscapes. Some earthquakes cause surface faulting which appears as a crack on the ground. It is possible for ground failure to occur which can generate liquefaction, lateral spreads, landslides, etcetera. Depending on the location of the earthquake, it can cause secondary threats such as tsunami, building fires, dam failures and other disastrous

Earthquakes are a natural phenomena caused by the violent and sudden shifting of plates along tectonic boundaries. Movement of tectonic plates releases stored energy producing seismic waves, which travel through the solid rock of the upper layers of the earth’s crust. Earthquakes occur along belts, circum-Pacific or Alpine, located near the edges of tectonic plates. Energy released by the interaction between two plates can produce severe damage to the surrounding environment.

     An Earthquake is the shaking of the earth's surface caused by rapid movement of the earth's rocky outer layer. The sudden shaking of the ground that occurs when masses of rock change position below the Earth's surface is called an earthquake. The shifting masses send out shock waves that may be powerful enough to alter the surface of the Earth, thrusting up cliffs and opening great cracks in the ground.