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 ...

Discover interesting facts about how big earthquakes can get, why earthquakes happen, and why they're so hard to predict.

Earthquake Magnitude Scale Magnitude Earthquake Effects Estimated Number Each Year 2.5 or less Usually not felt, but can be recorded by seismograph. Millions 2.5 to 5.4 Often felt, but only causes ...

We measure the force of an earthquake using the Richter Scale. It is often secondary hazards that result from an earthquake that cause the most harm. Landslides, fires and flooding can often cause ...

When you purchase through links on our site, we may earn an affiliate ... can transition rapidly to an earthquake, he said. Theoretically, if one could measure aseismic movement before a rupture ...

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