Unknown Interesting Facts about Earthquake

Almost every year we hear together how this planet moves, shaking up, shifting and killed thousand of lives on top of it. An earthquake is unpredictable. It comes often with no warning. Some earthquake collaborate with Tsunami and that makes his killing score rise up to hundreds of thousands lives. There are approximately a half million detectable earthquakes each year. Of the 500,000 earthquakes, only about 100,000 can be felt.