Question

The moment magnitude is calculated using all of the following factors EXCEPT for the A. surface area of a fault.                   B. magnitude of past earthquakes in the area. C. average displacement along a fault. D. rigidity of rock in the area.

Answer 1

Answer;

B. magnitude of past earthquakes in the area.

Explanation;

• Moment magnitude scale is the measurement of earthquakes that is mostly used by scientists today.
• Moment magnitude scales measures the size of the earthquake at its source. Moment magnitude measures the size of events such as earthquakes in terms of the amount of energy released.  
• Moment magnitude relates to the amount of rock movement and the area of the fault or fracture surface.

Answer 2

B, Magnitude of past earthquakes in the area