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Earthquake in Italy Kills 150

Where: Rome, ItalyApril 6, 2009 : A powerful earthquake rocked the mountainous Abruzzo region of central Italy in the early hours of April 6, 2009 (3.32am local time). Over 150 people were killed and 1,500 were injured. The number of people who may be trapped alive could not be estimated. Thousands of rescue workers searched for survivors. Some...

How are Earthquakes Recorded?

Seismograph instrument recording ground motion during earthquake
When an earthquake takes place, people say that it measured 6.2 or 6.5 on the scale. The scale they are referring to is the Richter Scale developed by Charles Richter in the 1930s.The Richter Scale measures the magnitude of the seismic waves or vibrations that travels across the earth's surface. The scale uses a logarithmic formula using high-frequency data...