Sign of Focus or Epicenter.. Hello Friends, welcome to my blog once again. Today I'll be talking about one of the most catastrophic calamities which world faces now-and-then i.e. Earthquakes. Friends many times when a news of an earthquake flashes on the TVs you must have wondered.. - How do these earthquakes occur and how can they be detected? - Why do they occur? - What are the possibilities that we can prevent it or mitigate its effects? - What is the science behind it? ETC.. So people, I will clear all these doubts in my todays article… Introduction.. Major earthquake zones.. An Earthquake is a trembling, shaking and vibrations of ground caused by passage of energy in the form of waves via breaking of rocks. The most immediate cause of most of the earthquakes is 'Faulting'(breaking and movement of rocks). The actual location of or zone below the earth surface where faulting occurs is known as 'Focus of an earthquake'. This focus lies below the surface bu...