The Richter scale is used to rate earthquakes.
A Seismograph
Seismagraph
A seismograph.
seismogram
I think it's a seismograph.
Richtor scales
A heart-rate monitor is used.
A seismometer, or seismograph. One of the two! :)
A seismograph is an instrument used to measure movement of earthquake. It measures the seismic waves of that area.
The size of an earthquake is defined by its magnitude. Magnitude is a measure of the energy released at the earthquake's source and is typically reported using the Richter scale or the moment magnitude scale.
The strength of an earthquake is typically measured using the moment magnitude scale (Mw), which takes into account the seismic energy released by the earthquake. This scale provides a single number that represents the overall size of the earthquake. Another commonly used scale is the Richter scale, which measures the amplitude of seismic waves.
An earthquake instrument is a device or tool used to measure and detect the different parameters associated with earthquakes, such as magnitude, intensity, and frequency. Some common earthquake instruments include seismometers, accelerometers, and tiltmeters, which help scientists monitor and study seismic activity.