This question and the following questions are about the map shown below of the Cascadia Subduction Zone. The map below shows the Pacific Northwestern United States and part of Canada, depicting major features of the Cascadia Subduction Zone. It shows the boundaries between the Pacific, Juan de Fuca, and North American plates, with arrows indicating the general direction of movement for each plate. The red triangles represent the locations of active volcanoes forming a volcanic arc. 1. Describe the spatial relationship between the oceanic trench (located along the boundary between the Juan de Fuca and North American Plates), the shoreline, and the volcanic arc (the chain of active volcanoes) shown on the map. By "spatial" relationship, we mean: where are these three areas located in relation to each other, how far apart, and how are they arranged relative to each other. 2. Lassen Peak is the southernmost active volcano in the Cascadia volcanic arc. Why are there no active volcanoes south of Lassen? 3. What is the distance, in miles, between the trench (the location where the Juan de Fuca plate begins to subduct under the North American Plate, as shown by the location of the plate boundary on the map) and Mount Hood, Oregon? Use the graphic scale shown on the map to determine the distance. (Lay the edge of a piece of paper against your screen and follow the steps for measuring distances with graphic scales)

Applications and Investigations in Earth Science (9th Edition)

9th Edition

ISBN:9780134746241

Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Chapter1: The Study Of Minerals

Section: Chapter Questions

Problem 1LR

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This question and the following questions are about the map shown below of the Cascadia Subduction Zone. The map below shows the Pacific Northwestern United States and part of Canada, depicting major features of the Cascadia Subduction Zone. It shows the boundaries between the Pacific, Juan de Fuca, and North American plates, with arrows indicating the general direction of movement for each plate. The red triangles represent the locations of active volcanoes forming a volcanic arc. 1. Describe the spatial relationship between the oceanic trench (located along the boundary between the Juan de Fuca and North American Plates), the shoreline, and the volcanic arc (the chain of active volcanoes) shown on the map. By "spatial" relationship, we mean: where are these three areas located in relation to each other, how far apart, and how are they arranged relative to each other. 2. Lassen Peak is the southernmost active volcano in the Cascadia volcanic arc. Why are there no active volcanoes south of Lassen? 3. What is the distance, in miles, between the trench (the location where the Juan de Fuca plate begins to subduct under the North American Plate, as shown by the location of the plate boundary on the map) and Mount Hood, Oregon? Use the graphic scale shown on the map to determine the distance. (Lay the edge of a piece of paper against your screen and follow the steps for measuring distances with graphic scales)