'Natural Science Essay\r'

'The relevance of this vagabondning question is to suss let out which brand of leading opus wipes is the best more than or little absorbent. Consumers want to use the product that is most strong at meeting their needs. A more costly product may actually be more cost effective if you can use less(prenominal) of it than a brand that costs less.\r\nLiterature review\r\nMany investigates nurse been conducted to experimentationation the strength and absorbency of musical composition wipes. While the steps of the experiment vary from see to tally, all of experiments atomic number 18 screening the aforementi aced(prenominal) devil factors; how practically water can to separately one story pass over brand absorb and how strong are severally of the report card pass overs. Below I have reviewed the extremity and results from lead experiments that are similar to the genius I lead be use.\r\nIn the freshman experiment, the tester uses five brands of repor t pass overs to test for absorbency, apply cover towels of the identical size to secure the the true of the results. He cotton ups a dickens go on deal in the piazza of a sheet of written report towel from severally brand represented and placing the opus towel in an embroidery hoop to uphold stability. He then usher outs fifteen drops of water into the center of the circle draw on the theme towel, restate the process for separately brand, and measures the amount of time it takes the paper towel to wick the moisture outside of the circle. This test concludes that Bounty has the greatest absorbency.\r\nThe next experiment tests for twain absorbency and strength. As in the first test, several divergent brands of paper towels were used. In this experiment, to test the absorbency, the tester takes a sheet of each of the towels an inserts it into a crosspatch with two troy ounces of water and leaves each sit for twenty snatchs. afterward the twenty seconds expire d, the tester removed the paper towel from the frappe and rang out each paper towel into a measu bounce cup to see how practically water each towel had absorbed. The second erupt of the experiment is conducted by stretching sheets of each paper towel through an embroidery hoop, placing 25 pennies in the center of the paper towel, and adding water to the towel drop by drop until the pennies fall through. The strongest paper towel in this test was Brawny Brand.\r\nThe final experiment that I reviewed also well-tried for absorbency. The theory bed this experiment was the winged that water moves through the towel, the more absorbent it is. The experimenter cut faux pass from each paper towel, cardinal inch panoptic and six inches long. A chink is drawn on each paper towel one inch from the end using a raincoat marker. The strip is then held in a glass of water with the bottom inch submerged, measure how long it takes for the water to live on the space of the strip. The proc ess is then repeated for each brand that is organism tested. The most absorbent brand in this test was Brawny.\r\n experimental Design\r\nA. Steps in Experimental Procedure\r\nThe absorbency of the towels entrust be tested by the speed the water moves through the paper towels, the faster the water moves, the more absorbent the towel is. I go away be using the following brands of paper towels in my experiment: Brawny, Bounty, Sparkle and Scott. Other supplies infallible to complete the experiment are: a waterproof marker, and a sixteen-ounce glass of water, and a timer that registers tenths of a second.\r\n1. Prepare three judges of paper towel from each brand by cutting strips of each that is 2 inches long and six inches long. 2. Using a water-proof marker, draw a line across each paper towel one inch from the bottom. 3. Fill a sixteen ounce glass with water and dress up timer. 4. Take the first strip of paper towel and submerge it up to the line in the glass of water while h olding it plumb to the glass while starting the timer. 5. Allow the timer to run until the water is absorbed through the paper towel and reaches the end of the towel not submerged. 6. Stop the timer and record the time in tenths of seconds. 7. Repeat steps 4 through 6 for all three strips of each brand.\r\nB. Reasoning for Choosing my Experimental Design program\r\nThe reason I chose this design for my experiment is because it seemed to be more accurate than former(a) testing methods I found during my literature review and could be performed with items I already had in my home. The experiment where the tester rang out the paper towels and measure the water that they had absorbed is less accurate because there is no guarantee of exerting the same amount of force each time you ring out a towel. There is no steering to completely drain the towel of all of the suave it absorbed. Stretching the paper towel samples across the embroidery frame is sound way to perform the experiment bu t it would have demand the purchase of spare materials.\r\nC. Sequence of Events to lay in Quantitative Data\r\nI give begin the collection of quantitative entropy by cutting the paper towel samples from each brand into strips that are one inch wide by six inches long, to ensure that all of the samples entrust be equal. I will use the same glass of water for each test to ensure the water composition is the same for each test. I have created a spreadsheet in excel with a column listing each of the brands cosmos tested and three columns for the time in tenths of a second to be entered upon completion of the experiment. During the experiment, I will accept notes on a tablet of the brand micturate and the time recorded to be entered into the spreadsheet upon completion of the replete(p) experiment.\r\nD. Describe Tools, Technologies, and Measurement Units that are used to Collect the Data\r\nTo collect the data for this experiment I will use one inch wide by six inch long stri ps of paper towel from each of the brands being tested, a gloomy water-proof marker to mark the strips of paper towel, an eight ounce glass of water, my hand to hold the strip vertical to the glass once submerged as indicated in the experimental procedure, a timer that measures tenths of a second, and a pad and pencil to record the initial results. erst the experiment is complete I will alter the results of the experiments to the spreadsheet that I have created using Microsoft Excel. I will also use excel to create the bright representation of the experiment results.\r\nDependent, Independent and Controlled Variables of the Experiment\r\nThe free lance variable in my paper towel experiment is the one inch by six inch strip of paper towel taken from a roll of each brand of paper towel used in the experiment.\r\nThe dependent variable in the experiment is the amount of time it takes the water to travel the length of the strip of paper towel deliberate in tenths of a second.\r\nT he controlled variables of the experiment are using the same glass of water, same size sample of paper towel, and same timer for each test in the experiment.\r\nThreat Reduction to Internal grimness\r\nTo reduce internal threats to validity I will use the same size tack on of each paper towel from each brand for each test to conduct the experiment, marking each piece with a line at exactly one inch from the bottom. I will use the same water sample to ensure the liquid being absorbed by each sample strip is identical; the same timer will be used for each test to ensure the true statement of the time recorded for each test. I will also monitor my results for outliers in the time required to absorb the water through each test towel to ensure the results are valid for each test.\r\nHypothesis\r\nThe sample of Bounty paper towels will overcharge up the water through the length of paper towel faster than the other brands because it is thicker than the other brands being tested. I have arrived at this end point because the dual layers of towel that are present in the sample of Bounty create a greater surface to absorb water. The other brands are much thinner and have less thickness to soak up water.\r\n'