Add Yahoo as a preferred source to see more of our stories on Google. The 4.8 magnitude earthquake that struck New Jersey on Friday generated shaking that could be felt from Washington, D.C., to north ...

THE destructive power of earthquakes is measured in different ways, but the one most people have heard of is the Richter scale. Here’s how the force is calculated – and what it means if you are caught ...

Earthquake strength is registered on the moment magnitude scale, which measures how much energy was released when the rocks along a fault moved during the quake. By Henry Fountain Earthquake strength ...

The moment magnitude scale (MMS; denoted explicitly with Mw or Mw, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on ...

Two hundred years ago, Missouri was rocked by an earthquake so severe it made the Mississippi River flow backward and set off church bells in Boston more than 1,000 miles away. These details help ...

Earthquakes are becoming increasingly frequent. On Sunday morning, four earthquakes struck parts of India, Myanmar, and Tajikistan within just one hour, sending tremors across central and South Asia.

Often in these weekly Night Sky columns I refer to the magnitude of a star or planet. The concept of magnitude is relatively easy to grasp. Put simply, magnitude indicates an object’s degree of ...

The earthquake that rattled Californians on Friday night measured a 7.1 magnitude, which doesn’t sound much worse than the 6.4-magnitude quake that struck a day earlier. But it was. The small ...