What benefit have early tests shown?
Predicting exactly when and where an earthquake will strike remains beyond science. Geologists can identify regions at risk, since quakes occur along fault lines, but they cannot name the day. Some researchers are experimenting with machine learning, feeding computers decades of seismic data in the hope that patterns will emerge. Early tests have produced warnings seconds before shaking begins, enough time for trains to slow and gas valves to close. Seismologist Dr Mei Tanaka stresses that this is early warning, not prediction. 'The distinction matters,' she says, 'because people who expect prediction will be disappointed.'
Answer and explanation
Correct answer: B. Warnings a few seconds before shaking
- Step 1: Find the part of the text that deals with this. Step 2. Fourth sentence. Answer: Warnings a few seconds before shaking. Why not the others: Enough time to slow trains.
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