(i)Two earthquakes, one of magnitude 4.5 and the other of magnitude 7.5, happened in two different places. Which one is more destructive and why?
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An earthquake of 7.5 magnitude on the Richter scale is more destructive than an earthquake of magnitude 4.5 because the energy ("strength") differences are huge and a lot of energy is produced during faulting, shaking the ground tremendously.
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