Earthquakes and seismic activity often happen with sudden movements underground with tectonic plates. Seismographs are used by scientists to measure the time, location and strength of an earthquake.

Earthquakes are measured using seismographs, which monitor the seismic waves that travel through the Earth after an earthquake strikes. Scientists used the Richter Scale for many years but now largely ...

MILLEDGEVILLE, Ga. — No, it wasn’t an early April Fools’ Day prank, a low-magnitude earthquake really did rumble the area late Sunday night. The United States Geological Survey (USGS) reported that a ...

ACCORDING to the Dominion Obsevatory Bulletin, No S–85, there were recorded in New Zealand, during 1946, 273 locally felt earthquakes. One of these, on June 26, was felt with Modified Mercalli scale 7 ...

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 ...