An earthquake is a sudden, violent shaking of the earth 's surface. At the time of earthquake, the some part of earth trembles . The trembling is sometimes mild but sometimes very violent.
The inside of the earth is a very hot burning some reason the heated matter becomes cool in some part. Then it contracts . The up-per part of the earth at that particular place is drawn down . Then this produces cracks on the surface of the earth . The water of the ocean flows down through these cracks on the surface of the earth . The water of the ocean flows down through these cracks and comes in touch with the hot liquid and stream is produced . It wants to rush out and the earth and the earth is violently shaken. If the earthquake is mild, it does not do much harm . But if it is violent its effect is dangerous . It causes a great loss of life and property .
Many brick-built houses fall down when the earth trembles for two to three minutes. some times the water of ponds and rivers swells all on a sudden and sometimes the water of a river or a part of the ocean is dried up , and land appears there. Thousands of lives are lost Crops are destroyed . There was a violent earth quake in Nepal in 1990 B.S. It caused great loss to country , Kathmandu suffered great damages as a result of this earthquake. Many people lost their lives.
Many People became homeless every year we read in newspaper reports of great earthquake in different part of world.The earthquake is a terrible enemy manking. We cannot it. We do not know anything about it when it will take place.Wooder house should be built where earthquake occur very often.
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