hello i need a 100 words essay about earthquakes as i need it for my project . THANK YOU
Answers
Earthquake is when the ground beneath us starts shaking. An Earthquake is made up of two words- earth and quake. Quake means shaking. It is a natural disaster because it happens naturally.
It happens when the outer layer of the earth releases energy to the outside on which we live. It creates waves which make the ground tremble. Its intensity is measured in scientific ways.
Earthquakes are of different types and intensity. There are plates like things which are under the surface on which we live. They are known as Tectonic plates.
Sometimes these tectonic plates come in contact with each other which shakes the Earth. Also, when Volcanoes come out, an earthquake happens. When scientists test nuclear bombs, it also affects the earth deeply and causes an earthquake.
An earthquake has severe effects. It can occur any time so no preparation can be done suddenly to stop it. When it occurs, buildings start falling down and many people die under them. In the hilly areas, lands start sliding. They take away people and cars on the roads and everything gets crushed.
Earthquakes also cause fires because sometimes gas pipes are broken. When an earthquake happens inside the sea, it can cause a Tsunami. It sends high waves into the land due to which many people die and those areas near the sea are destroyed.
Earthquakes take away the lives, property and lands of people. Scientists have developed many technologies to know when an earthquake may come. There are many man-made reasons too due to which earthquake happens.
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@BrainlyFlash
Answer: hey mate here is your answer,,,,,,,,,,,
Explanation: WHAT IS AN EARTHQUAKE?
An Earthquake is defined as a phenomenon where tectonic plates slip past one another, creating seismic waves that travel through the earth’s rocks. Depending on the intensity of the earthquakes, the effects can vary from minor structural damages to buildings to complete collapse, resulting in loss of life and property. Sometimes, when an earthquake originates from the middle of the ocean, it can cause extremely large and destructive waves called tsunamis. However, an earthquake does not directly pose danger to a person; in other words, people cannot be shaken to death by an earthquake.
UNDERSTANDING THE CAUSES OF EARTHQUACKES?
Now that we know what is an earthquake, we shall explore how it is caused. The earth is made up of four layers – the inner core, outer core, mantle, and crust. The mantle and the crust essentially behave as a very thin layer of shell on our planet’s surface. However, this shell is not composed of one single piece; there are several pieces that exist under the earth, each slowly sliding past one another. These pieces are called the tectonic plates. There are in fact seven tectonic plates that are found under the earth’s crust:
African plate
Antarctic plate
Eurasian plate
Indo-Australian plate
North American plate
Pacific plate
South American plate
Moreover, these plates are never static, they always keep moving. Over the earth’s history, tectonic plates have merged with other plates to form even larger plates. Other tectonic plates have drifted into smaller plates and some have been even pushed under other plates (subduction). This is one of the biggest reasons why we had supercontinents in the past, and their eventual breakup into the seven continents that we know today.
When two or more tectonic plates meet, the area usually becomes a hotspot for earthquakes. The actual event is caused when these plates start slipping past one another, creating energy in the form of seismic waves. Depending on the location and magnitude, these seismic waves have the potential to absolutely decimate buildings and natural ecosystems. The area where these earthquakes are known to occur is called the geologic faults.
WHERE DO EARTHQUAKE OCCUR?
Earthquakes can occur anywhere on earth, however, it occurs in more frequency where two tectonic plates meet, especially along the fault lines. The length of fault lines varies between a few meters to hundreds of kilometers. Most of the world’s earthquakes occur in a place called the Ring of Fire, in the Pacific Ocean. The Belt traces boundaries between many tectonic plates, as a result, there is a lot of movement. This consequently makes it geologically active and is considered a very “violent” place from a seismological perspective. Moreover, there are many underwater active volcanoes that line these boundaries, hence the name: Ring of Fire.
HOW IS EARTH IS MEASURED?
Earthquakes are measured using a unit called Magnitude. The instrument that measures these units is called seismographs. However, scientists often prefer to use the Moment Magnitude Scale over the magnitude scale is often
EFECTS OF EARTHQUACKES:
As stated before, earthquakes do not directly cause harm to humans. However, earthquakes can cause substantial damages to property. One of the most prominent dangers is ground displacement. Any buildings along the fault can collapse, thereby causing injury or death to humans. The effect of ground shaking as a result of seismic waves can also impact the structural integrity of buildings. Roads and bridges may not be traversable due to the damage caused.
Earthquakes also cause an event called liquefaction. This occurs when sand or soil becomes very soft when it gets mixed with groundwater. When liquefaction occurs under a building, it can cause it to tip over, sink several feet, thereby rendering the building a hazard.
CAN WE PREDICT EARTHQUACKES?
Earthquakes can never be predicted with current technology. However, we can calculate the probability of an earthquake occurring in specific areas (geologically active areas).
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