The document summarizes a science fair project that investigated how different liquids affect renal function and urine production. The project involved three participants drinking one liter each of water, tea, and coke, and then collecting and measuring their urine at 20 minute intervals over 100 minutes. It found that coffee produced the most urine and that the different liquids affected the pH and volume of urine excreted. The purpose was to show how the kidneys respond to different fluids by modifying urine production.
![Colegio San Patricio Andrtea M. Cavada Maldonado #3 9A October 19, 2009’ Science Fair Renal Function Category: Life ScienceProblem Being Investigated: Which types of fluids affect the kidneys in different ways? What is the pH of the urine excreted? How do these fluids affect urine production? Renal Function Science Fair Project Three types of liquid were ingested (water, tea, and coke) over five twenty minute intervals to determine how much urine each beverage would produce, and the pH of each of the urine from these fluids. Of the three liquids, coffee indeed did produce the most urine. I. PurposeThe purpose of our Renal Function Science Fair Project experiment is to show the kidney’s aptitude to modify the production of urine in response to the ingestion of different liquids, such as water, tea, and coke. Various fluids affect the kidneys in different ways. This experiment is useful in everyday life because as I ponder on the busy, routines much of us complete daily, it would be helpful to know which fluids cause us to have to use the restroom more frequently than others. Also, it will be useful to know if certain fluids can be hazardous to our health by causing dehydration.II. ProcedureThe controls of the Renal Function Science Fair Project experiment are as follows: The participant must not consume large amounts of liquid at any meal preceding the experiment. This is to empty the bladder in order not to alter the results. The participant should also not consume drinks (other than the water) The participant must control the amount of perspiration and condensation from the body (Also not to alter the results of experimentation). The independent variables of this experiment are the three different types of liquid being consumed. The dependent variables are how much urine that is collected at each interval. Necessary materials: ,[object Object],Ingest one liter of water rapidly to minimize the total time required for ingestion. Record the time of ingestion Collect urine samples at 20 minute intervals for a total of five twenty minute periods. Each collection and total volume of each should represent a complete emptying of the bladder. Record the total volume collected and the color of the urine. Test the urine by carefully holding and placing the pH paper in the beaker. Record the urine’s pH. After every measurement and color is recorded, discard the urine. These procedures are to be repeated with each different liquid ingested.](https://image.slidesharecdn.com/sfpresearch-091021114747-phpapp02/85/sfp-research-1-320.jpg)
