1. In the Figure 1 schematic view of the ocean bottom, the vertical scale is given in kilometers (km). This vertical scale is vastly different from the horizontal scale. The vertical distance between scale markings is [(1)(10)(100)] km.
2. The ocean trench in the schematic view has a maximum depth of [(8)(80)(800)] km below sea level.
3. The distance between scale markings on the horizontal scale is 100 km. Comparison of the vertical and horizontal scales indicates that the vertical scale is exaggerated [(10)(100)(1000)] times relative to the horizontal scale.
4. The right portion of Figure 1 describes general characteristics of the ocean bottom in coastal areas that are tectonically passive (not near a plate boundary). The left portion of the figure generalizes tectonically active coastal areas. Tectonically active regions, typically associated with convergent plate boundaries, experience relatively frequent earthquakes and/or volcanic activity. You examined the locations of plate boundaries in Investigation 2A. Convergent plate boundaries are more closely associated with the [(west)(east)] coasts of the Americas.
5. The east coasts of North and South America, with their generally broad continental margins similar to the right profile in Figure 1, are tectonically [(active)(passive)].
6. The west coasts of the Americas, with relatively narrow continental margins similar to the left profile in Figure 1, are tectonically [(active)(passive)]. Figure 2 displays a section of the South American west coast as an example, with a dark-blue ocean trench in close alignment to the green coastal land areas.
7. In the Figure 3 cross-section, water depth and land elevation are reported in m with the 0 m line representing sea level. Horizontal distance is measured in km from 75° W eastward to 70° W. The total length of the cross-section is about 500 km. Compare this vertical cross-section with Figure 1. Figure 3 most closely resembles the [(left)(middle)(right)] portion