Part 3: USGS Earthquake Viewer in the Continental United States Move your earthquake viewer map to...

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Part 3: USGS Earthquake Viewer in the Continental United States Move your earthquake viewer map to the Lower-48 States of the U.S. In the map settings, change the Earthquakes selection to "30 Days, Magnitude 2.5+ U.S." 1. Examining the earthquake viewer map, what states appear to have the most earthquakes? [0.5] 2. Using basic reasoning, what processes could explain the number of earthquakes in California? (Use complete sentences.) [1] PAGE 5 OF 6 INTRODUCTION TO PHYSICAL GEOGRAPHY GEOG 1114 Read the "Overview" and "Myths and Misconceptions" sections of the USGS's Induced Earthquakes site at https://earthquake.usgs.gov/research/induced/. 3. From measured data, have there always been large numbers of earthquakes in the central United States, or is this a new trend? Explain. [1] 4. According to the USGS, what is the cause of the increased number of earthquakes? [0.5] 5. In Oklahoma, what is the primary type of water being forced into disposal wells? [0.5] Many people think that the ocean floor is deepest at diverging mid-ocean plates; however, it is deepest at trenches associated with subduction zones. A cross-section profile of a mid-ocean ridge (figure below) shows that the highest elevation for each plate is at the spreading center. Farther from the spreading center, the oceanic crust sinks. Why is the spreading center higher in elevation than the rest of the plate? [Hint: Think about temperature differences as you move away from the spreading center. How would temperature affect properties of the plate?] [+1] slevation below walevel (m) 5000 Mid Atlantic Ridge Profile FRO 1300 140 -1100 Bathymetry data from http://www.marine-geo.org/tools/GMRTMapTool/. Using this tool, you can plot cross sections of the ocean floor. Part 3: USGS Earthquake Viewer in the Continental United States Move your earthquake viewer map to the Lower-48 States of the U.S. In the map settings, change the Earthquakes selection to "30 Days, Magnitude 2.5+ U.S." 1. Examining the earthquake viewer map, what states appear to have the most earthquakes? [0.5] 2. Using basic reasoning, what processes could explain the number of earthquakes in California? (Use complete sentences.) [1] PAGE 5 OF 6 INTRODUCTION TO PHYSICAL GEOGRAPHY GEOG 1114 Read the "Overview" and "Myths and Misconceptions" sections of the USGS's Induced Earthquakes site at https://earthquake.usgs.gov/research/induced/. 3. From measured data, have there always been large numbers of earthquakes in the central United States, or is this a new trend? Explain. [1] 4. According to the USGS, what is the cause of the increased number of earthquakes? [0.5] 5. In Oklahoma, what is the primary type of water being forced into disposal wells? [0.5] Many people think that the ocean floor is deepest at diverging mid-ocean plates; however, it is deepest at trenches associated with subduction zones. A cross-section profile of a mid-ocean ridge (figure below) shows that the highest elevation for each plate is at the spreading center. Farther from the spreading center, the oceanic crust sinks. Why is the spreading center higher in elevation than the rest of the plate? [Hint: Think about temperature differences as you move away from the spreading center. How would temperature affect properties of the plate?] [+1] slevation below walevel (m) 5000 Mid Atlantic Ridge Profile FRO 1300 140 -1100 Bathymetry data from http://www.marine-geo.org/tools/GMRTMapTool/. Using this tool, you can plot cross sections of the ocean floor.

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Examining the earthquake viewer map the state that typically has the most earthquakes in the Lower 48 States is California This is because California ... View the full answer