Conductivity Of Water
This experiment was designed to explore nature of water as it pertains to conductivity. It can be shown that the conductivity of a substance is directly related to the amount of dissolved salts in the substance, as salts are ions. One contributor to water conductivity, therefore, is soil, as it contains many minerals and other substances which, when dissolved in water, form ions. The experiment focused on the effect of three variables on water conductivity: the type of soil, the amount of time that the soil was saturated with water, and finally the amount of soil used in each solution. I therefore used two samples of soil, one normal sample from outside my apartment and another from a bag of potting soil. I also varied the amount of time that the soil was allowed to remain in the water for a sample of normal soil. Finally, for each type of soil, three different amounts were used in each trial. The results, as will be discussed more fully in the statistical analysis, indicate that in almost each case, changing the variable produces a significant difference in the result. The one exception involved time, which was found to be a factor, but with limits. That is to say, the conductivity leveled off after a few minu
The results of my experiment have led me to the following conclusions. Based on the low probabilities returned by the c^2 test, the amount of dirt is a definite factor in increasing conductivity. This is in accordance with the size of a watershed being influencing the conductivity of a body of water. The higher the dirt to water ratio, the higher conductivity will be. Also, the source of the soil is a huge factor. This too makes sense. The potting soil I used has many extra minerals added, which when dissolved will increase the conductivity of water much more than some sample of regular dirt. Finally, and perhaps most controversially, the amount of time that the soil soaks in water also is a significant factor relating to conductivity, but only to a certain extent. After some time, the conductivity levels off due to an overabundance of ions in the water. Were I to do this experiment again, I believe I would focus more on this aspect and attempt to devise some method of modeling this behavior. Since I only have one trial at my disposal, I did not feel confident in finding a model. Sample B 298.7768 0.693204 0.029558 Mean Std Dev Std Error c^2 for A c^2 for B c^2 for C Sample C 298.6925 0.691735 0.029496
Some topics in this essay:
Std Error,
Statistical Analysis,
Experimental Design,
Electrical Conductivity,
,
Sample Mean,
amount soil,
c^2 c^2,
Mean Difference,
potting soil,
Regular Soil,
Dev Std,
Std Dev,
std dev std,
std error c^2,
std dev,
dev std,
type soil,
mean std,
conductivity water,
c^2 sample,
c^2 c^2 c^2,
error c^2 c^2,
std error,
dev std error,
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Approximate Word count = 1879
Approximate Pages = 8 (250 words per page double spaced)
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