Earthquakes : Causes And Destruction Of Natural Disasters Around The World

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.

water fractures within the earth. Causing certain areas of the land to have an earthquake effect

It is not that strong compared to the S- wave, but it does wreck anything that is really stiff or not flexible enough to stand it, but do note that there is barely any building that can escape an earthquake not scattered except if it levitates. This can move anything that's hanging on the wall or knock down furniture. P-waves are much faster than S -waves and it is really weak compared to the other waves. It the shaking that you feel before the building collapse like when you press medium vibration on a massage chair. But mostly they are meant to weaken the structure of the base or crack the ground to prepare for the bigger

Helens exploded but what is an earthquake? Earthquakes are the earth-shaking vigorously because the earth crust is moving which is caused by the tectonic plates. The lithosphere is made up of the earth crust and the uppermost mantle which is broken into the tectonic plate, that slowly move over a mechanically weaker layer, the asthenosphere, which is part of the upper mantle. These plates have different boundaries in the world, where two different plates meet, all of the boundaries are shown in this map. These plates are pushed together from interior earth, the plate's often collided near the boundaries causing volcanic eruption, earthquakes and tsunamis. There are different types of collision that cause different effects on our earth. Convergent boundaries- when two plates slide up against each other and one may be subducting under another . Divergent boundaries- are two plates pulling away from each other, which can create new

Earth is a life giving planet. It is also true that it’s never at rest. It is in a daily course of revolution and rotation, making us experience not only night and day, but also seasons. This planet goes through many changes that brings wonders, but also catastrophes. These forces of nature leave damages and deaths all over the world. One of these cataclysm is earthquakes. What exactly is an earthquake? An earthquake is the ground shaking caused by the sudden movement of one block or rock slipping past another along the faults (Lutgens, Tarbuck). There is a process that causes an earthquake to happen. First it involves the heating, followed by

An earthquake by definition is violent vibrations caused by rocks breaking under huge amounts of stress. The underground surface that the rocks break are the edges of a tectonic plate or a fault plane.

An earthquake is what happens when two blocks of the earth suddenly slip past one another. The surface where they slip is called the fault of fault plane. The location below the earth's surface where the earthquake starts is called the hypocenter, and the location directly above it on the surface of the earth is called the epicenter. There are four types of earthquakes tectonic,volcanic,collapse,and explosion. Another good topic to study is deeper into the science of earthquakes. ”Most earthquakes occur along faults, or breaks, in the Earth's crust.” by Bill Haneberg.http://tremor.nmt.edu/faq/what.html

On Friday at 2:46 p.m. local time, near the northeast coast of Japan, there was a magnitude of 9.0 disastrous earthquake occurred on March 11, 2011 (“Poster of the Great Tohoku Earthquake”, 2012). Earthquakes occur at fault when a fracture in the earth along which movement occurs. When strain builds up, the fault slips and earthquake is created. Earthquake, the most destructive natural disasters of all is caused by the movement of the tectonic plates in the lithosphere. The ground shaking is produced by a rapid released of energy and stress in the Earth. When the stress is release, it sends vibrations known as seismic waves that produced at the focus of the earthquake. Honshu earthquake is considered as one of the deadliest earthquakes and

Earthquakes are sudden movements of a portion of the earth 's tectonic plate, which is followed by a series of vibrations. Aftershocks of similar or lesser intensity can follow the main quake, this can also be referred to as tremors. Earthquakes can be measured using data from seismometers Earthquakes can occur at any time of the year and happen in irregular intervals. They can also trigger tsunamis, landslide and volcanic activity, but they are usually limited to small areas.

P waves or primary waves are the first waves that a read on a seismograph because P waves travel faster that S waves. P waves are longitude waves which means that the vibrations are sent out in the same way as the direction of travel. S waves or Secondary waves are the second reading on a seismograph as they travel slower. S waves are diverse waves which means that are at a right angle to the direction of travel. Both waves can be detected close to the earthquake centre but only P waves can be detected on the other side of earth as P waves can travel through solids and liquids but S waves can only travel through solids.

     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.

Earthquakes leave a series of “aftershocks” which eventually affects the world and the people in it. Hours, days or weeks can go by and more quakes occur after the main earthquake. Each year around the world there is about 20,000 earthquakes. The majority go unnoticed because of how weak these

The slipping fault then creates seismic waves in the surrounding rock. Seismic waves create the sound waves in the air. It also carries energy away from the fault, first to nearby rock. In hours to follow or even days many small earthquakes occur. These are referred to as aftershocks. Aftershocks are a result of rocks near the fault adjusting to accommodate the new stress levels.

In the U.S. alone, the average annual cost to repair damage caused by earthquakes is $4.4 billion USD. The worldwide figure is much larger than this but unquantifiable due to poorer countries unable to accurately determine the amount of damage that occurred. Year after year the cost of damages barely fluctuates from these ridiculously high figures and money must be pumped into repairing the damage done. Although a lot is being learnt about earthquakes and the fact that humans are now normally able to be alerted in time to evacuate the area the earthquake will affect, there have been no breakthroughs into reducing the amount of damage earthquakes cause to buildings and infrastructures.

Earthquakes are caused by energy from vibration of elastic waves in the ground. When the ground shakes, buildings respond to acceleration transmitted from the ground through the structure foundation. It takes taller buildings longer to feel the effects of an earthquake than shorter buildings which is why they are more susceptible to damage. Many tall buildings are constructed to withstand strong winds and precautions have been taken to protect them when the ground shakes. They can be made to receive earthquake’s vibration. While many people are killed in earthquakes, people are not killed during the shaking. More get crushed in the rubble. Landslides are caused by earthquakes, when they shake unstable slopes. Moonquakes occur, but they happen less frequently but because of the distance have a smaller magnitude than earthquakes on the Earth. There is no such thing as "earthquake weather.” Statistically, there is an equal distribution of earthquakes in cold weather, hot weather, rainy weather and so on. If weather does affect earthquake occurrence, we do not yet understand how it works. Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little.