Question

Which of the following is/are the measuring instrument of earthquake?

• A. Seismograph
• B. Richter Scale
• C. Mercalli Scale
• D. All of the above

Answer 1

Answer: (D)

All of the above

All three following instruments are useful in measuring the seismic activity under the earth's surface. A seismometer is an instrument that responds to ground motions, such as caused by earthquakes, volcanic eruptions. Richter scale a quantitative measure of an earthquake's magnitude. The modified Mercalli intensity scale also measures the effect of an earthquake on the Earth's surface.