Chapter 4.2A, Problem 1A

Examine Figure 4.41 Does the difference in the arrival times of the first P wave and the first S wave on a seismogram Increase or decrease the farther a station IS from the epicenter?

The difference in arrival times _____ the farther a station is from the epicenter

Figure 4.4 Travel-time graph used to determine the distance between an earthquake epicenter and a seismic station.