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Depth (km) 40 Crust 670 2,900 5,155 024 6,371 Upper mantle Lower mantle Outer core Inner core Velocity (km per second) 6 8 10 12 14 -B- S-Wave E S-Wave F. P-Wave P-Wave Low-velocity zone 400 P-Wave Transition zone D Core-mantle boundary liquid 670 Inner core / outer core boundary solid Seismic Velocity Profile of Earth 1. Which seismic waves travel faster: S waves or P waves? 2. Describe how velocity of seismic waves change from 0-670 km depth. 3. Give a reason for the change in speed in the first 670 km depth. 4. How does the velocity of seismic waves in the lower mantle compare to that of the upper mantle? (Where do they travel faster?) 5. Give a reason for the change is velocity between the upper and lower mantle. What happens to waves between Dand E? Why? Why are there no S waves in the outer core? Which layer do waves travel fastest and why? 6. 7. 8.

Depth (km) 40 Crust 670 2,900 5,155 024 6,371 Upper mantle Lower mantle Outer core Inner core Velocity (km per second) 6 8 10 12 14 -B- S-Wave E S-Wave F. P-Wave P-Wave Low-velocity zone 400 P-Wave Transition zone D Core-mantle boundary liquid 670 Inner core / outer core boundary solid Seismic Velocity Profile of Earth 1. Which seismic waves travel faster: S waves or P waves? 2. Describe how velocity of seismic waves change from 0-670 km depth. 3. Give a reason for the change in speed in the first 670 km depth. 4. How does the velocity of seismic waves in the lower mantle compare to that of the upper mantle? (Where do they travel faster?) 5. Give a reason for the change is velocity between the upper and lower mantle. What happens to waves between Dand E? Why? Why are there no S waves in the outer core? Which layer do waves travel fastest and why? 6. 7. 8.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Depth (km) 024 40 Crust + 670 2,900 5,155 6,371 Upper mantle Lower mantle Outer core Inner core Velocity (km per second) 6 8 10 12 14 --B- S-Wave E S-Wave TL P-Wave P-Wave Low-velocity zone 400 P-Wave Transition zone D Core-mantle boundary liquid 670 Inner core / outer core boundary solid Seismic Velocity Profile of Earth 1. Which seismic waves travel faster: S waves or P waves? Describe how velocity of seismic waves change from 0-670 km depth. 3. Give a reason for the change in speed in the first 670 km depth. 4. How does the velocity of seismic waves in the lower mantle compare to that of the upper mantle? (Where do they travel faster?) 5. Give a reason for the change is velocity between the upper and lower mantle. 2. 7. 8. What happens to waves between Dand E? Why? Why are there no S waves in the outer core? Which layer do waves travel fastest and why?
Transcribed Image Text:Depth (km) 024 40 Crust + 670 2,900 5,155 6,371 Upper mantle Lower mantle Outer core Inner core Velocity (km per second) 6 8 10 12 14 --B- S-Wave E S-Wave TL P-Wave P-Wave Low-velocity zone 400 P-Wave Transition zone D Core-mantle boundary liquid 670 Inner core / outer core boundary solid Seismic Velocity Profile of Earth 1. Which seismic waves travel faster: S waves or P waves? Describe how velocity of seismic waves change from 0-670 km depth. 3. Give a reason for the change in speed in the first 670 km depth. 4. How does the velocity of seismic waves in the lower mantle compare to that of the upper mantle? (Where do they travel faster?) 5. Give a reason for the change is velocity between the upper and lower mantle. 2. 7. 8. What happens to waves between Dand E? Why? Why are there no S waves in the outer core? Which layer do waves travel fastest and why?
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