with increasing travel time the difference in arrival times between the P and S wave____
a.increase
b.decreases
c.stay constant
d.none of these
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with increasing travel time the difference in arrival times between the P and S wave____
a.increase
b.decreases
c.stay constant
d.none of these
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Answer:
A. I N C R E A S E
Explanation:
A. I N C R E A S E
Answer:
A.
Explanation:
The different waves each travel at different speeds and therefore arrive at a seismic station at different times. P waves travel the fastest, so they arrive first. S waves, which travel at about half the speed of P waves, arrive later. A seismic station close to the earthquake records P waves and S waves in quick succession. With increasing distance from the earthquake the time difference between the arrival of the P waves and the arrival of the S waves increases.