Taking water samples from various ponds and measuring stuff like temperature, ph, and oxygen levels.What are some control variables that might not be well controlled in this experiment?
contaminants in the water that may or may not affect oxygen levels, precipitates in the water such as silts or cloudiness in water, extraction sites for water may be at a beach where water is more shallow, resulting in it warming up faster and thus not being a completely accurate gauge of temp. of the entire pondWhat are some control variables that might not be well controlled in this experiment?
Temperature is not a very good variable to add here. Temperature depends on the amount of exposure to the sun, the season, the warmth, etc. of the enviornment around it. Also, temperature could differ between various areas in the pond, and temperature could change when you take the sample, unless you plan on doing it on the spot.
P.S. You should limit your experiment to only ONE variable (Or thing that is to be measured). As of this moment, I think acidity/ph would be the most solid thing to base your experiment on.
none really all will be controlled but the oxygen levels measurement can be the problem because that must be measured at the spot, if you transport it the temp will change which will give another result it also counts for the Ph level.
Hmmmm.well.
I think the pickle in the cup would be a control variable but still be verry controlled in that experment.
Oh, but the solamy sausage is verry un controled. Verry Verry un controled.
various ponds maybe
heavy metals, bacteria, algae, toxins, such as pesticides and herbicides
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