Lecture 18 Assignment

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Arizona State University *

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251

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Physics

Date

Apr 3, 2024

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docx

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1

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Lecture 18 Assignment GEOS251 | Spring24 Name: _______________________________ Grade: ___/10 pts --------------------------------------------------------------------------------------------------------------------- This lecture assignment covers key concept presented in lecture 18. Assessment due on Thursday March 14 th at 11am. 1. What type of fault is shown in A? ______________________________________ [1 pt] 2. In which panel is the stress on the fault the highest? ______________. [1 pt] 3. How do you call the distance of the offset between the two blocks? _____________________ [1 pt] 4. Name the three types of seismic waves: [1.5 pts] ________________________ ; _______________________ ; ____________________ 5. For each of the following statement, circle the right word(s) [2 pts] P / S waves are fast / slow waves that move by compressing and stretching rock. P / S waves are fast / slow waves that move by shearing rock. Love / Rayleigh waves are surface waves that produce a rolling motion. Love / Rayleigh waves are surface waves that produce a side-to-side motion. 6. EQ happens in the upper crust because of the ductile deformations: TRUE or FALSE [0.5 pt] 7. On a seismogram, which seismic wave arrives first? ___________________ [1 pt] 8. On the Richter scale: A magnitude 7 Earthquake = _____ times a magnitude 4 EQ [1 pt] 10. Assuming that a magnitude 9 EQ generates a fault slip of 25 m and that the plate velocity along a strike-slip fault is 8 cm/year. What would be the average recurrence of EQ along this fault? [1] D C B A
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