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(12.2) Uses fault size and distance that fault blocks move to measure magnitude a moment magnitude b seismograph c Richter scale d modified Mercalli scale

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4 (237 Votes)
Woodrow Mckay Professional · Tutor for 6 years

Answer

a moment magnitude

Explanation

1. Identify the concept The description refers to measuring earthquake magnitude using fault size and displacement, which matches the **moment magnitude** method.2. Eliminate incorrect options Seismograph measures motion, Richter scale is based on seismic wave amplitude, and Mercalli scale measures intensity, not magnitude.