Monday, September 26, 2011

Earth Quake Facts

1.According to the National Earthquake Information Center, about 1.4 million earthquakes happen every year. The large    
     majority are micro quakes, measuring less than 3 on the Richter scale.

2.Scientists had been studying phenomena like volcanoes and earthquakes for years and finally broke through with the
    theory of plate tectonics in the mid-20th century.

3.Earthquakes kill about 8000 people a year.

4.When two plates move away from each other, magma (molten rock) seeps up through the crack.

5.There are four types of fault: normal, reverse, thrust and strike-slip.