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Name Date Per Review Guide: Determining Magnitude; Locating the epicenter of an earthquake Part 3: Determining Magnitude 9. What is the approximate Magnitude of the earthquake being displayed? M= 10. Explain how you were able to determine this. 11. What is the approximate Magnitude of the earthquake being displayed? M= Part 4: Locating the epicenter 12. Describe the steps you would take to locate the epicenter of an earthquake. 13. What is the S-P interval for this seismogram? 14. What is the distance to the earthquake if the S-P interval is 62 seconds? D= 15. What is the distance to the earthquake if the S-P interval is 35 seconds? D= 16. What is the distance to the earthquake if the S-P interval is 48 seconds? D= 17. Explain why it is necessary to have data from three seismograph stations in order to locate the epicenter.