Madhya Pradesh Police Exam Model Paper 4

The correct answer is Seismograph .

• Seismograph records the waves reaching the surface during an earthquake.

• Earthquakes:
  • The sudden tremors or shaking of the earth's crust is called an earthquake.
  • The earth’s crust is made up of different parts of various sizes. They are called plates.
  • Most of the earthquakes in the world are caused by the movements of the plates.
  • ‘ Seismology ’ deals with the study of the earthquake.
  • ‘Richter scale ’ and ‘ Mercalli scale are the instruments to measure and record the magnitude and the intensity of an earthquake respectively.
• The place where the seismic waves originate beneath the earth’s surface is called the focus of the earthquake.
• The epicenter is that point on the ground surface that is closest to the focus.