An earthquake's magnitude is a measure of how strong it is
The magnitude of an earthquake is a measurement of the amount of energy released.
magnitude
Magnitude
A seismograph was created to measure out the magnitude of earthquakes.
The Richter scale and Magnitude
The moment magnitude scale is used to measure the magnitude of large earthquakes. The Richter scale is still used to make an initial estimate of the magnitude of larger earthquakes and to measure small and moderate ones (those with a magnitude below 7).
You can measure earthquakes on the Moment magnitude scale or the Richter scale
The instrument that is used to measure the magnitude of an earthquake is a seismometer.
This is known as magnitude. It is measured on the moment magnitude scale.
They use a richter scale to measure intensity and magnitude.
Mercalli and Richter scales
earthquakes with high magnitude.
Earthquake strength is measured using a magnitude scale. For small to moderate strength Earthquakes (< magnitude 7) the Richter scale is used. For Earthquakes between 7 and 8 the body and surface magnitude scales are used and for earthquakes larger than 8, the moment magnitude scale is used.