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How long does an earthquake P-wave take to travel the first 6500 kilometers after the earthquake occurs?  

How long does an earthquake P-wave take to travel the first 6500 kilometers after the earthquake occurs?  

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A. 6.5 minutes
B. 8.0 minutes
C. 10.0 minutes
D. 18.5 minutes
E. So, let s go to Narnia

This question is part of The Awesome Earth Science Midterm Review Quiz Thing
Asked by Iamadinosaur, Last updated: Jan 29, 2019

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2 Answers

J. Harty

Have keen interest in writing, traveller by heart.

J. HartyWriter, M.A, Chula Vista
Writer, M.A, Chula Vista

Answered on Jan 29, 2019

The correct answer to this question is C. Seismology is the scientific study of earthquakes. The p-wave, or primary wave, is the fastest seismic wave and is measured with a seismograph to create a seismogram. The seismograph uses needles to record the waves on paper.

To find out the travel time of a p-wave or an s-wave, use the Earthquake Travel Time chart. When you find 6,500 km on the x-axis, you follow see that the p-wave line intersects at about 10 seconds. A related scientific field is called paleoseismology, which uses geology to study past earthquakes.

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John Smith

John Smith

Answered on Jan 23, 2017

10.0 minutes

Credit goes to::::https://regentsprep.org/Regents/core/questions/question.cfm?Course=ESCI&TopicCode=05&QNum=1&Wrong=0 To find the answer go to p. 11 of the Earth Science Reference Tables. Locate the P-wave line. Then locate 6500km on the x-axis of the P and S-wave chart. Follow the 6500 line up to the P line, when it intersects follow the line to the left and locate travel time.
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