If You Know Sa and Depth of Ocean How Do You Find Volume

Using ii maps of the earth, make up one's mind approximately how much of the surface of the world is land and how much is covered past water.

Materials

• Figs. 1.8.i and 1.viii.2
• Tables 1.1–1.half dozen
• Globe
• Pencil or pen
• Colored pencils or crayons (optional)
• Calculator (optional)

Procedure

1. Compare the equal-expanse and cylindrical-project maps (shown in Figs. 1.8.one and 1.8.ii) to a globe. Hypothesize which type of map you think is a better representation of the surface area of the ocean basins and continents. Write downwardly your hypothesis, and make certain to include your reasoning.

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2. Using Tables 1.ane and 1.2, mark and label the boundaries of ocean basins and continents on both maps (Figs. ane.8.1 and 1.8.2). For this activity, group the islands with the continent closest to them. You may use colored pencils or crayons to color-code the maps. Brand a map legend that explains how the boundaries are labeled and how your coloring of the boundaries shows information.
   
3. Decide the surface area of the body of water basins and continents for each map by counting and recording the number of squares.
   
   1. If yous are completing this activity in a grouping and splitting up tasks, brand sure everyone is consequent in their methods. Exist prepared to give reasons for your decisions. For instance, determine how the group will count squares that are partially land and partially sea.
   2. Count the squares for the surface areas of each ocean basin and each continent on each map. Record this information in Tables 1.3 and i.4.
      
4. Collect and record the foursquare count for the surface areas of the continents and bounding main basins from each group in the class. Calculate grade averages. Record this information in Tables 1.iii and i.four.
   
   1. Using the course boilerplate data, calculate the credible surface area by multiplying the number of squares counted past the surface area of each square.
   2. Record this data in Tables i.iii and 1.4. Use the class average data for the rest of the process.
      
5. Rank the continents and ocean basins in society of size. Rank the largest every bit number one, the next as number 2, etc. Record your information in Tables ane.3 and 1.four.
   
6. Fill up in Tabular array i.3 and i.4 with the accepted values for each continent and ocean basin given to you by your instructor.
   1. Rank the continents and ocean basins using the accustomed value areas.
   2. Record your data in Tables one.3 and i.4.
7. Calculate the percentages of the surface expanse of the world covered by the continents and past bounding main water.
   
   1. Add together up your calculated area for the continents and ocean basins in each map from Tables i.3 and one.4. Record this data under the columns "Total area equal-area" and "Total area cylindrical" in Table 1.5.
   2. Add the expanse of continents and the ocean for each map to get the total surface area of earth. Record this number in Table 1.5.
   3. Summate the percentages of the surface area of the earth covered by continents and by ocean h2o using the formula
      

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      Using the scientifically accepted surface areas for the continents and ocean in Table 1.v, calculate the scientifically accustomed percentage of each.
      
8. Calculate the approximate book of each body of water bowl in Tabular array ane.6. Utilise the values you calculated from Table 1.4, the given average depth of each ocean bowl in Table 1.6, and the formula below to calculate the volume:
   

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   Volume = Surface area ten Depth
   1. Rank the volume of the body of water basins past size for both both equal-expanse and cylindrical project maps in Tabular array 1.6.
   2. Rank the largest ocean basin equally number 1, the next largest as number 2, etc.
      
9. Fill in Table 1.6 with the scientifically accepted values for each body of water basin book (given to you past your teacher). Rank the largest sea basin as number i, the next largest as number 2, etc. Record your data in Table 1.6.

Activeness Questions:

1. Compare the rank order of the apparent area for ocean basins and continents in Tables ane.3 and 1.4.
   
   1. Is the rank social club the same for an equal-surface area map as it is for a cylindrical-project map? If not, explain why it is different.
   2. How does the rank order of each map compare with the rank social club of the accepted values?
      
2. Compare the percentage surface area for the continents and the bounding main in Table ane.5.
   
   1. How exercise the percentages of state and sea on a equal-surface area map compare to those on a cylindrical-projection map?
   2. How do the percentages from each map compare to the accepted value percentages?
      
3. Compare the rank club of the volumes for the continents and the body of water basins in Tabular array 1.vi.
   
   1. Is the rank order the same for an equal-area map as it is for a cylindrical-projection map? If not, explain why it is different.
   2. How does the rank order from each map compare with the rank order of the accepted values?
      
4. Listing the body of water basins from largest to smallest. Which sea basin is the largest? Which is the smallest? (Consider each ocean basin's expanse, depth, and book.) Include the reasoning for your decision.
   
5. Compare equal-area maps, cylindrical-projection maps, and globes.
   
   1. Compared to a globe, which map gives the more than accurate measure of expanse?
   2. Which map distorts the continents and bounding main bowl shapes least?
   3. Which map shows distances more than accurately?
   4. Which map shows directions more accurately?
   5. Which map is easier to read? Why?
   6. When would you lot use each type of map? Why?
   7. What are some other advantages and disadvantages of equal-area and cylindrical projection maps?
      
6. Did you detect that different groups had unlike counts for their number of squares of land and water? If so, why exercise you think they were unlike? Why do you think you were asked to calculate the class averages of your counted squares? If you had not used the form averages for the rest of the procedures, how would your results have been afflicted?
   
7. When yous compared your estimates of surface area and book to results accepted by the scientific community, what did you find? Were your course's estimates of land and water surface surface area different from those of the scientific community? If so, why practise you think they were different?
   
8. In textbooks and popular literature it is commonly reported that the earth ocean covers over ii-thirds of the earth. How does this estimation compare to the percentages calculated in Table i.5?
   
9. Explain the difference in meaning between each of the following terms:
   
   1. credible surface area and accepted surface area
   2. surface area, volume, and depth

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Source: https://manoa.hawaii.edu/exploringourfluidearth/physical/world-ocean/map-distortion/activity-how-much-water

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