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homework5_ans copy - SIO 10 Winter 2010 Homework 5 Due...

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SIO 10 – Winter 2010 Homework # 5 Due Friday, February 19 Lectures 13-16, Chapters 10, 11 and Interlude D 20 Points Answer Key 1: a) What are the 3 types of faults, what plate boundary are they found in, and sketch their sense of motion. Make sure to indicate the hanging wall and footwall. (2 pts) Reverse, strike-slip and normal faults. Reverse faults are at convergent plate boundaries, normal faults at divergent plate boundaries and strike-slip faults at transform boundaries. b) Describe the elastic rebound theory. (1 pt) Page 308: Between faulting events, stress builds up along plate interfaces until the stress is able to overcome the friction along the fault, in which place the stress is released and the plate relaxes back to a stable state, when the cycle begins again c) List the four seismic waves generated by an earthquake in order of relative velocity (fastest first). (2 pts) P-waves S-waves Love waves Rayleigh waves d) The difference in arrival times between P and S waves can be used to determine how far from a seismometer an earthquake occurred.
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