How do you measure earthquake strength?

Answer 1

Scientists use a machine called a seismometer to measure the strength of an earthquake. The calculated magnitude had been expressed on the Richter scale, a base 10 logarithmic scale, but with a usable limit of 6.5. Currently, magnitude is expressed on the Moment Magnitude Scale.

Answer 2

Earthquake strength is commonly measured using the Richter scale or the moment magnitude scale. These scales quantify the energy released by an earthquake based on the amplitude of seismic waves recorded on seismographs. The magnitude value provides an indication of the earthquake's strength relative to other earthquakes.

Answer 3

By tensile,compressive,indentation,abrasion,scratch and impact tests etc