Question

Choose the correct answer The Magnitude of an earth quake is measured by ………….. a. seismograph b. pitcher scale c.Ammeter d.Fotameter​

Answer 1

Answer:

seismographs

A seismograph is the primary earthquake measuring instrument. The seismograph produces a digital graphic recording of the ground motion caused by the seismic waves. The digital recording is called a seismogram. A network of worldwide seismographs detects and measures the strength and duration of the earthquake's waves.

Answer 2

Answer:

A seismograph, or seismometer, is an instrument used to detect and record earthquakes. Generally, it consists of a mass attached to a fixed base. During an earthquake, the base moves and the mass does not. ... Seismograph generally refers to the seismometer and its recording device as a single unit.