Bissoy.com
Doctors Medicines MCQs Q&A

Which of the following statements is/are NOT true with reference to the measurement of earthquakes?  Statements:  I. The Mercalli scale measures the intensity of earthquakes on levels ranging from 1 to 9. II. The Richter scale assigns a numerical value to quantify energy released during an earthquake. III. The Moment magnitude scale is used to determine the size of an earthquake.

Which of the following statements is/are NOT true with reference to the measurement of earthquakes?  Statements:  I. The Mercalli scale measures the intensity of earthquakes on levels ranging from 1 to 9. II. The Richter scale assigns a numerical value to quantify energy released during an earthquake. III. The Moment magnitude scale is used to determine the size of an earthquake. Correct Answer Only I 

The correct answer is Only I.

Key Points

  • The Mercalli scale measures the intensity of earthquakes on levels ranging from 1 to 12. Hence, statement 1 is not correct.
  • Mercalli scale
    • It was developed by Italian seismologist Giusseppe Mercalli.
    • It measures the intensity of an earthquake.
    • This intensity scale shows the visual damage caused by the event.
    • The intensity scale ranges from 1-to 12.​
    • It is a linear scale to measure an earthquake.

Additional Information

  • Richter scale
    • ​It was developed by Charles F. Ritcher.
    • It measures the magnitude relates to the energy released during the earthquake. 
    • The magnitude is expressed in absolute numbers, 0-10.
    • It is a logarithmic scale i.e. a magnitude 5 earthquake is ten times as intense as a magnitude 4 earthquake. Hence, statement  2 is correct.
  • Moment magnitude scale
    • The moment magnitude scale is expressed as MW.
    • It works on a wide range of earthquake sizes and is applicable globally.
    • It is based on the total moment release of the earthquake.
    • It is also based on a logarithmic scale 
    • It is capable of measuring M8 ('magnitude 8') and greater events accurately.
      • i.e The Moment magnitude scale is used to determine the size of an earthquake. Hence, statement 3 is correct.

Related Questions

Consider the following statements relating to Richter scale: 1. It was devised in 1935 by Charles F. Richter 2. It describes the quantity of energy released by a single earthquake 3. Richter Scale has no upper limit Which of the statements given above is/are correct?
What among the following is FALSE about the Richter scale? A. It was developed by Charles Richter and Gutengberg in 1935. B. It is a logarithmic scale C. It can be measured using a seismometer D. Magnitude of 8-9 on a Richter scale means it is a micro earthquake.
With reference to earthquakes, which of the following statements are correct? 1. Earthquakes largely occur along the converging plate boundaries. 2. Point of origin of the earthquake in the lithosphere is known as focus/Hypocentre. 3. The intensity of the earthquake decreases with distance from the epicentre. 4. The epicentre of the earthquake always remains over continents only. Select the correct answer using the code given below.
With reference to earthquakes, which of the following statements are correct? A. Earthquakes largely occur along the converging plate boundaries. B. Point of origin of earthquake in lithosphere is known as focus/hypocenter. C. Intensity of earthquake decreases with distance from the epicenter. D. Epicentre of earthquake always remains over continents only. Select the correct answer using the code given below.
The magnitude of the earthquake is measured on Richter scale. Which value or above on Richter scale can cause damage from falling things?
Five movies A, B, C, D, and E are to be released on five different days from Monday to Friday, one movie per day, by keeping the following rules in mind:- [1] Movie D cannot be released on Monday. [2] If movie A is released on Monday then movie D will be released on Friday. [3] If movie D is released on Tuesday then movie B will be released on Monday. [4 ] Movie C is released on the next day of release of movie E. If movie B was released on Tuesday, then which movie was released on Monday?
The notification for six different posts - Clerk, PRO, Lecturer, Accountant, Watchman and Principal- are to be released on consecutive Fridays. The schedule of the releasing is to be in accordance with the following conditions: (i) Clerk post must be released a week before the Watchman post. (ii) Lecturer post must not be released immediately after the first release. (iii) PRO post must be released on the Friday following the Friday on which the Principal post is released. (iv) Accountant post must be released on the fifth Friday and should not be immediately preceded by the PRO post. (v) The Watchman post must not be released last. Which of the following notifications will be released immediately after the PRO post?
An earthquake of magnitude 6 on Richter scale has ______________ times more destructive energy than an earthquake of magnitude 4.
An earthquake of magnitude _________________ on Richter scale has thousand times more destructive energy than an earthquake of magnitude 4.
Which one of the following measuring scales is used to determine the intensity and severity of an earthquake? I. Mercalli Scale II. Saffir-Simpson Scale