Question

A seismic P-wave is recorded at 2:25 p.m. at a seismic station located 7600 kilometers from the epicenter of an earthquake. At what time did the earthquake occur?

(1) 2:05 p.m.
(2) 2:11 p.m.
(3) 2:14 p.m.
(4) 2:36 p.m.

Answer 1

The correct answer for this question is number "(3) 2:14 p.m." A seismic P-wave is recorded at 2:25 p.m. at a seismic station located 7600 kilometers from the epicenter of an earthquake. At 2:14 p.m. is the time the earthquake occur. Additional information about P-wave is that P-waves travel faster than S-waves and pass through Earth’s liquid zones.