Lab 2B 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 …show more content…
The maximum depth is at a distance of about 80 km from the shoreline. The nearly horizontal continental shelf extends westward from the shoreline about 10 km before the profile of the ocean bottom indicates a relatively steep decline that continues until the maximum depth is reached. According to Figure 1, this decline primarily composes the [(continental rise)(continental slope)(abyssal plain)].
9. Oceanward of the oceanic trench, the ocean bottom first rises and then levels off to a depth of approximately 3900 m, making the deepest part of the ocean trench about [(1400)(2400)(3500)] m below the bottom of the abyssal plain ocean bottom west of the trench. 10. This Figure 3 vertical cross-section exhibits a profile consistent with a tectonically [(passive)(active)] coastal region. 11. The horizontal distance in Figure 5 is measured in km from 77° W eastward to 71° W, covering a total length of about 550 km. The average maximum depth of the nearly horizontal eastern portion of the profile is about 4400 m. Compare this vertical cross-section with Figure 1. Figure 5 most closely resembles the [(left)(middle)(right)] portion of Figure 1. 12. In the Figure 5 profile, the coastline is within a few kilometers of the western end of the vertical cross section. From the coastline, water depth increases very gradually to about 40 m at 140 km from shore (western end of the profile). This segment of the vertical cross-section resembles the continental [(rise)(slope)(shelf)] .
Cite this Geol 1345 Lab 2B s
Geol 1345 Lab 2B s. (2018, Feb 08). Retrieved from https://graduateway.com/geol-1345-lab-2b-essays/