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Project title Pollution and depth of waterFeatured science projectScience project video
Difficulty Level High school
Project page  Click here to view this science project

Description
Does the pollution in a lake get worse as it gets deeper? Is the water cleaner nearer the surface? Or is it the other way around? This science fair project was conducted to determine how the depth of water can affect the concentration of pollution found in the water. The experiment was done by collecting water samples from a lake at depths of 1 meter, 2 meters 3 meters and 4 meters.  

Instructions preview
1. For this science fair project, the independent variable is the depth at which the water sample is taken i.e. 1 meter, 2 meters, 3 meters and 4 meters. The dependent variables are the pH reading, turbidity, ammonia content and the nitrate content of the water sample. This is determined by using pH paper, the turbidity meter and the freshwater test kit.. The constants (control variables) are the amount of water taken and the depth at which the water samples were obtained. 2. You will need the scuba diver to gather the water samples at 4 different depths. The .....
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