Sagot :
Answer:
A
Explanation:
The Richter magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs. Adjustments are included for the variation in the distance between the various seismographs and the epicenter of the earthquakes.
Answer:
A. Intensity and magnitude
Explanation:
Seismologists measure the strength of an earthquake by using Intensity and Magnitude.