Earthquake is a shaking of the ground caused by the sudden breaking and shifting of large sections of the earth's rocky outer shell. Earthquakes are among the most powerful events on the earth and their results can be terrifying. Severe earthquake may release energy 10,000 times as great as that of the first atomic bomb. Rock movements during an earthquake can make rivers change their course. Earthquake can trigger landslides that cause great damage and loss of life. Large earthquakes beneath the ocean can create a series of huge, destructive waves called "Tsunamis" that flood cause such type of tsunami hit the South East Asian coasts on December 26,2004 and more then 2,83,100 people were killed.
Earthquakes almost never kill people directly. Instead, many deaths and injuries in earthquakes result from falling objects and the collapse of buildings, bridges and other structures. Fire resulting from broken gas or power lines in another major danger during a quake. On average, a powerful earthquake occurs less then once every two years. At least 40 moderate earthquakes cause damage some where in the world each year. About 40,000 to 50,000 small earthquakes large enough to be felt but not damaging occur annually.
Why Earthquakes occur?
Scientists have developed a theory called "plate tectonic" that explains why do most earthquakes occur. According to this theory, the earth's outer shell consists of about 10 large rigid plates and about 20 smaller ones. Each plate consists of a section of the earth's crust and a portion of the "Mantle" the thick layer of hot rock below the crust. Scientists call this layer of crust and upper "mantle" the "lithosphere". The plates move slowly and continuously on the asthenosphere, layer of hot, soft out in the mantle. As the plates move, they collide, move apart, or slide past one another.
The movement of the plates strains the rock at the near plate boundaries and produces zones of faults around these boundaries. Along segments of some faults, the rocks become locked in place and cannot slide or the plates move. Stress builds up in the rock on both sides of the fault and causes the rock to break and shift in an earthquake.
Safety Precautions:
Safety precautions are vital during an earthquake. As you know that earthquakes never kill people directly. People can protect themselves by standing under a door frame or crouching under a table or chair until the shaking stops. They should never go out doors until the shaking has stopped completely. Even then, people should use extreme caution. Large earthquakes may be followed by many smaller quakes, called after shocks. People should stay clear of walls, windows and damaged structures which could crash in an after shock. People who are outdoors, when an earthquake hits should quickly move away from tall trees, steep slopes, buildings, and power lines. If they are near a large body of water, they should move to higher ground.
So Beware! And follow the above instructions during earthquake, because it is an unpredictable natural hazard.
Let us pray that may Allah almighty protect us from the destructive activities of such a natural hazard like earthquake.
Earthquakes almost never kill people directly. Instead, many deaths and injuries in earthquakes result from falling objects and the collapse of buildings, bridges and other structures. Fire resulting from broken gas or power lines in another major danger during a quake. On average, a powerful earthquake occurs less then once every two years. At least 40 moderate earthquakes cause damage some where in the world each year. About 40,000 to 50,000 small earthquakes large enough to be felt but not damaging occur annually.
Why Earthquakes occur?
Scientists have developed a theory called "plate tectonic" that explains why do most earthquakes occur. According to this theory, the earth's outer shell consists of about 10 large rigid plates and about 20 smaller ones. Each plate consists of a section of the earth's crust and a portion of the "Mantle" the thick layer of hot rock below the crust. Scientists call this layer of crust and upper "mantle" the "lithosphere". The plates move slowly and continuously on the asthenosphere, layer of hot, soft out in the mantle. As the plates move, they collide, move apart, or slide past one another.
The movement of the plates strains the rock at the near plate boundaries and produces zones of faults around these boundaries. Along segments of some faults, the rocks become locked in place and cannot slide or the plates move. Stress builds up in the rock on both sides of the fault and causes the rock to break and shift in an earthquake.
Safety Precautions:
Safety precautions are vital during an earthquake. As you know that earthquakes never kill people directly. People can protect themselves by standing under a door frame or crouching under a table or chair until the shaking stops. They should never go out doors until the shaking has stopped completely. Even then, people should use extreme caution. Large earthquakes may be followed by many smaller quakes, called after shocks. People should stay clear of walls, windows and damaged structures which could crash in an after shock. People who are outdoors, when an earthquake hits should quickly move away from tall trees, steep slopes, buildings, and power lines. If they are near a large body of water, they should move to higher ground.
So Beware! And follow the above instructions during earthquake, because it is an unpredictable natural hazard.
Let us pray that may Allah almighty protect us from the destructive activities of such a natural hazard like earthquake.
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