There are a number of ways to measure the magnitude of an earthquake. Most scales are based on the amplitude of seismic waves recorded on seismometers. These scales account for the distance between ...

II Felt by a few people, especially on upper floors. III Noticeable indoors, especially on upper floors, but may not be recognized as an earthquake. IV Felt by many indoors, few outdoors. May feel ...

The Karnes County earthquake was the third-strongest recorded in South Texas, according to the U.S. Geological Survey.

The Richter magnitude scale is used to measure the size of earthquakes. Many earthquakes occur around the Pacific Ocean. People who live there, in countries such as Japan, are used to earthquakes ...

Shaking lasted less than 30 seconds. According to the moment magnitude scale, which is used to measure earthquake magnitude and has replaced the previously used and well-known Richter scale ...

Hard to believe but Ohio has already seen more than 80 earthquakes this year. Magnitude scales are used to measure an earthquake's size. Magnitude is a figure typically expressed by a whole number ...