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Using figures 9.16 and 9.
Using figures 9.16 and 9.17 in the textbook, and the Tectonic Plate Boundaries, Crust Types, and Features Handout, find one example of each of the following combinations of plate boundary type and crust type. For each one, indicate where it is located geographically, name the plates involved, and (if present) list the tectonic, seismic, volcanic, and surface features that are found there. If certain features are absent, explain why. Geosystems in action 10.2 and figure 10.21 should also be helpful. (2 pts. each)
- Convergent boundary between oceanic crust and continental crust
- Location
- Plates
- Features
- Tectonic
- Seismic
- Volcanic
- Surface
- Convergent boundary between continental crust and continental crust
- Location
- Plates
- Features
- Tectonic
- Seismic
- Volcanic
- Surface
- Divergent boundary between oceanic crust and oceanic crust
- Location
- Plates
- Features
- Tectonic
- Seismic
- Volcanic
- Surface
- Divergent boundary between continental crust and continental crust
- Location
- Plates
- Features
- Tectonic
- Seismic
- Volcanic
- Surface
- Transform boundary between continental crust and continental crust
- Location
- Plates
- Features
- Tectonic
- Seismic
- Volcanic
- Surface
- Explain why Seattle and Portland have to worry about volcanoes but San Francisco, Los Angeles, and San Diego do not. Figure 10.11 and the Tectonic Plate Boundaries, Crust Types, and Features handout should help. (2 pts.)
- The table below summarizes the characteristics and effects of earthquakes that struck Haiti in 2010 and Japan in 2011. Use this information and your knowledge of plate tectonics, faulting, and earthquakes to answer the questions that follow.
- MagnitudeFocusTectonic SettingFatalitiesCostHaiti 20107.08 milesTransform Boundary222,570$25 billionJapan 20119.020 milesConvergent Boundary30,000$325 billion
- How much larger was the wave amplitude in the Japan earthquake compared to Haiti? Approximately how much more energy was released in Japan compared to Haiti? (Hint: See "Earthquake Intensity and Magnitude" on page 330 in the textbook). (2 pts.)
- Notice that even though the Haiti quake was lower in magnitude than Japan, it caused many more deaths. What physical/tectoniccharacteristic could account for this discrepancy? Explain. What cultural/socioeconomic characteristics could account for this discrepancy? Explain. (2 pts.)
- Why was the cost of the earthquake in Japan so much higher than in Haiti? (2 pts.)
- In the 1978 movie Superman, the evil Lex Luthor plans to hit the San Andreas Fault with a nuclear missile, so that the land west of the fault will "fall into the ocean," creating new oceanfront property that he has already purchased at a very good price. Briefly explain why his plan would never work, and what really will happen to land that is west of the fault in the long run. Figures 10.11 and 10.17 in the textbook should help. (2 pts.)