Use the figure on 6.4 to determine the difference in arrival times, in minutes,

Question

Use the figure on 6.4 to determine the difference in arrival times, in minutes, between the first P wave and the first S wave for stations that are the following distances from an epicenter:
1000 miles:_____________ minutes 2400 kilometers:______________ minutes 3000 miles:________________ minutes ne dlferénce in the arrival times of the first P wave and the first S wave on a seismo gram increase or decrease the farther a station is from the epicenter? The difference in arrival times the farther a station is from the epicenter. TRAVEL-TIME GRAPH Distance in kilometers 1000 2000 3000 4000 17 16 15 14 13 s 12 S-wave curve 10 P-wave curve 2500 3000 2000 1500 1000 500 Distance in miles from epicenter

Explanation / Answer

The answer of this question involves nothing but simple subtraction.

The main trick to solve this question is to identify the difference between the arrival times.

First note down the arrival time of s wave from the s wave curve for a certain time, ( it is 6.5 minute for 1000 miles) and that for p wave (which in this case is 3.5 minute for 1000 miles).

Now just simply subtract the two values.

There for we get, difference in arrival time , for

1000 miles is 3 minuits.(6.5-3.5)

similarly

for 2400 miles it is 5.5 minuits (approx)

for 3000 miles it is 6.5 minuits (approx).

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.