8. Choose the correct statement: a. Seismic waves travel faster through less dense material b. Seismic waves travel at one speed regardless of the density of the material c. It is not possible to record the speed of seismic waves d. Seismic waves travel faster through more dense material 9. In Figure 1, which set of waves are the surface waves? a. A b. B c. C d. They are all P waves 10. Good evidence that the Earth has a layered structure is where seismic waves: a. suddenly change paths when the density abruptly changes b. travel in gently curving paths due to refraction c. travel in gently curving paths due to total internal reflection d. travel in straight lines through the Earth e. travel in gently curving paths due to diffraction 11. How do rock particles move during the passage of a S wave through the rock? a. back and forth parallel to the direction of wave travel b. perpendicular to the direction of wave travel c. in a rolling elliptical motion d. in a rolling circular motion 12. If a S wave were to go from a solid to a liquid - what would happen to its velocity? a. stay the same b. increase c. decrease to 0.0 d. Slightly decrease13. Which of the following statements is NOT true about earthquakes and plate tectonics? a. Earthquakes provide important evidence for plate tectonics. b. Earthquakes that have shallow foci are located at transform plate boundaries. c. Earthquakes show the difference between "continental" and "oceanic" plates. d. Earthquakes that have deep foci are located in association with subducted slabs..

1. 8. Choose the correct statement: a. Seismic waves travel faster through less dense material b.
Seismic waves travel at one speed regardless of the density of the material c. It is not possible to
record the speed of seismic waves d. Seismic waves travel faster through more dense material 9.
In Figure 1, which set of waves are the surface waves? a. A b. B c. C d. They are all P waves 10.
Good evidence that the Earth has a layered structure is where seismic waves: a. suddenly change
paths when the density abruptly changes b. travel in gently curving paths due to refraction c. travel
in gently curving paths due to total internal reflection d. travel in straight lines through the Earth e.
travel in gently curving paths due to diffraction 11. How do rock particles move during the passage
of a S wave through the rock? a. back and forth parallel to the direction of wave travel b.
perpendicular to the direction of wave travel c. in a rolling elliptical motion d. in a rolling circular
motion 12. If a S wave were to go from a solid to a liquid - what would happen to its velocity? a.
stay the same b. increase c. decrease to 0.0 d. Slightly decrease13. Which of the following
statements is NOT true about earthquakes and plate tectonics? a. Earthquakes provide important
evidence for plate tectonics. b. Earthquakes that have shallow foci are located at transform plate
boundaries. c. Earthquakes show the difference between "continental" and "oceanic" plates. d.
Earthquakes that have deep foci are located in association with subducted slabs.