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How does surface area affect weathering?

An experiment through finding the surface area of cubes.
by

Theodore Leon

on 28 October 2013

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Transcript of How does surface area affect weathering?

Weathering and Surface Area
How does surface area affect weathering?
Weathering happens primarily at interfaces. Interfaces are a boundary between different materials. Slicing a mineral into different pieces increases its surface area. A chemical change depends on the total amount of surface area exposed. There are two types of weathering: chemical and physical weathering. Physical weathering changes the appearance of rocks (such as changing them into smaller pieces). This project will focus on the effects of weathering on surface area.
Hypothesis
We think that with a greater amount of surface area, more weathering will occur on the substance. This will result in a direct relationship.
Procedure/Items Needed
List of Materials: Ruler, calculator, graphing paper, ruler, small cubes (1 cm × 1 cm)
1. Measure one side of the cube, and then find the surface area of the cube (Surface Area= 6a2). You should get 6 cm (You would square the side and then multiply it by 6).
2. Assembly a 2 × 2 cube. Measure the side of it. Plug it into the formula as “a”. You should get 24 cm.
3. If you have 1,000 cubes to make a 10 × 10 cube, that’s great. Keep on following the same steps. If not, you should realize the amount of cubes you need to make one side is the length of that side in centimeters. Plug this into the formula until you get up to 10 cm.
4. Graph this on your graphing paper using a single line graph.

Analysis
Our graph shows that the larger the cube was, the larger the surface area is. The graph shows a direct relationship, however, the larger the cube the more faces of the smaller cubes that make it up isn’t exposed. If the cubes that made up a 2 × 2 cube were broken up into the 8 pieces that made it up, then the surface area would have been 48 cm. Our graph shows that our hypothesis was correct.
Conclusion
In conclusion, our hypothesis was correct. This is proven by our graph, which shows a direct relationship.
Graph
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