Earthquake Lab by sciencecourseware.com. This packet includes a map of the western USA with a scale, 3 seismograms, and a lag-time versus distance graph. This lab follows Chapter 15 Lesson 1 on Earthquakes.

1. Locating an Epicenter

2. This Earthquake's Seismograms are Below
Use these three seismograms to estimate the S-P time interval for each of the recording stations.
Record your measurement for the S-P interval in the box below each seismogram.
Eureka, CA Seismic Station S-P Interval = seconds
Elko, NV Seismic Station S-P Interval = seconds

3. Las Vegas, NV Seismic Station S-P Interval = seconds
Find the distance using the lag time vs. distance graph.