EARTHQUAKE 

An earthquake is a movement of the Earth that is produced by the accumulation of the release of energy in form of seismic waves. They can also occur for other reasons, for example: Friction on the edge of tectonic plates, volcanic processes or they can be produced by man when are testing underground nuclear detonations.

Types of Earthquakes

There are many types of movement of an Earthquake for example:

Perimetric: This Earthquake is originated within the oceanic or continental plates after the liberation of a concentration of power that emerged from the depths.

Tectonic: These Earthquakes occurs from a tectonic fault, these occurs from the escape or release of energy from deep areas and rises inside such failure.

Volcanic: These Earthquakes originate within a volcano or after exhaust energy concentration arising from the depths or structure formed on the volcanic.

Preliminary: These are important pre intensity earthquakes. They re generated from exhaust energy released thickness which provides the main exhaust. This destabilized seismic zones taking energy from the depths

Micro Quakes: These are developed low intensity earthquakes in areas with greater depth of the lithosphere or in the mantle zone with greater height

Replicas: These low intensity quakes are the caused after a major earthquake

Preliminary Perimetric: Antedate perimetric earthquakes whose intensity is high most cases are produced from spontaneous processes

Preliminary Volcanic: These volcanic earthquakes precede high intensity. They also tend to develop from spontaneous processes 

Preliminary Tectonic: Prior to a gen tonic earthquake high intensity occurs. They usually develop  from spontaneous processes 

Seaquake: These earthquakes are developed in the deep sea, either within some underwater 
tectonic fault or in some variable point of underwater plate. These can be developed by spontaneous processes or periodic and, unlike the other earthquakes, the energy is released in 
the deep sea.

Examples of Earthquakes 

These are the five strongest earthquakes recorded in the world 

Valdivia (Chile) : The strongest earthquake recorded, hit Chile on May 22, 1960, with a magnitude of 9.5 degrees on the Richter scale. Were killed 1,655 people and injured 3,000, and 2'000,000 lost their homes.

Alaska (EE UU) : On March 27, 1964, an earthquake of magnitude of 9.2 hit Alaska. It also sparked an intense tsunami, with waves that reached more than 5 meters high.

Sumatra-Andamán (Indonesia) : In 2004, an earthquake of 9.1 degrees in the Indian Ocean, with its epicenter near the west coast of Sumatra (Indonesia). Fourteen countries in South Asia and Africa were affected. Almost 228,000 people were killed or disappeared due to the earthquake. It is the most duration has had all registered to date: between 8.3 and 10 minutes. 

And it was big enough to make the entire planet vibrate at least one centimeter.

Kamchatka (Russia) : On November 4, 1952, an earthquake of magnitude of 9.0 hit Kamchatka, Siberia and Kuril Islands, causing devastating tidal waves that reached Hawaii, Japan, Alaska, Chile and New Zeland. Triggered tsunamis that reached Hawaii, Japan, Alaska, Chile and New Zeland.

Tōhoku (Japan) : On 11 March 2011, Japan was the victim of a 9.0 earthquake according to the Japan Meteorological Agency (overcoming the force of 8.9 initially estimated by the US Geological Survey). NASA using satellite images, has found that the quake may have moved Japan more than 2 meters 

                                                           Benefits and Disadvantages of the Earthquakes

A benefit of the earthquakes it can be that if a small earthquake of 1 or 2 in the Richter Scale can omit a bigger earthquake because a very small earthquake release all the energy bit by bit  and don't release all the energy at the same time. When all the energy is released at the same time it's when a bigger earthquake comes and make a disaster in the country or in the city and it can also affect the economy and the quality of life of the country.
                                                     

                                                 What you need to do in case of an earthquake 

1) Keep calm 

2) Eliminate sources of ignition 

3) Retire windows and falling objects 


4) Don't use elevators 

5) Settle into security zones 

6) Locate the evacuation route 

Triangle of life 

According to Douglas Copp, when buildings collapse the objects inside are crushed by the weight of the roof falling. However, around each of these objects are empty spaces; These spaces are the "triangle of life" and are the recommended site for an earthquake to survive.

The more massive and bigger an object is, be less compressed after being crushed so that the greater the remaining space around them.

In my opinion the triangle of life is the best way to prevent an earthquake and don't be injured.

The earthquake of  Valdivia (Chile) was the most interestingg for me because it was the biggest earthquake recorded in the world.

This topic it's very interesting for me because the disaster and landslides catch my attention and I want to feel an small earthquake because I never feel an earthquake in my life.

Thank you for your attention. 


Made by: Jose Eduardo Coutiño Flores 7A 



Sources:

www.tiposde.org/ciencias-naturales/461-tipos-de-terremotos/

www.muyhistoria.es/contemporaneo /articulo/los-cinco-terremotos-mas-intensos-de-la-historia 

misioncuriosity.blogspot.mx/2013/07/los-beneficios-de-los-terremotos.html

https://Es.m.wikipedia.org/wiki/Triángulo_de_la_vida