How are earthquakes measured?
The tremors produced by an earthquake can be measured by using sophisticated instruments called ‘ Seismographs’ it shows earth tremors as wriggles in hire traced on a turning drum. A tremor vibrates the weight that holds the tracer. The seismograph then gives a number with a decimal point to rate the earthquake. The intensity of the earthquake is measured on the Richter Scale, an established scale of 0-10. No earthquake has ever been registered higher than 8.9. an earthquake of such an intensity would leave only a few survivors!
