Exercise * Earthquakes & Earth's Interior Answer Key
1. 11
2. Five
3. Seven
4. 5
5. 30
6. greater
7. increases
8. 1000 miles - 3.25 minutes difference; 2400 km - 4.20 minutes difference; 3000 miles - 6.50 minutes difference
9. 2100 miles
10. 7 (approximate)
11. 10:32 PM (approximate)
12. Table 8.1 If you get relatively close, that's good.
New York_* Seattle___* Mexico City
Elapsed time between first P and first S wave * 5.5 minutes * 4 minutes * 3.5 minutes
Distance from epicenter in miles __________ * 2400 miles * 1400 miles * 1200 miles
13. & 14. on Figure 8.5
15. 28 degree N latitude and 112 degree 30 minutes west longitude
16. 8:54 UTC (7 minutes difference between the actual time of the earthquake and when it was recorded in New York