Surface Area.docx - Surface Area While physical weathering...

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Surface AreaWhile physical weathering processes are much faster than chemical weatheringprocesses, the more a rock is broken down physical, the more total chemicalweathering occurs. This results because the surface area of a rock increasesexponentially each time it is broken. Eventually rocks weather into small enoughparticles so that they are not easily physically weathered anymore (about the sizeof a small piece of gravel). At this point, rocks weather chemically faster than theydo physically.Directions:Assuming that a rock begins as 1x1 m cube, we can examine therelationship between particle size and surface area by examining the blocksdivided below. For the following 5 examples, calculate the surface area for thetotal number of cubes shown and plot the results on the graph provided. Be sureto answer the questions below and include your units. Remember that each cubehas 6 sides.1 mExample 1Example 2Example 3Example 4Example 5
Example 1Total surface area:6m2Length of 1 cube:

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Erosion, 0 0625m, 0 0078 M

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