But, when you spill your water, it goes everywhere. Abstract. How much did you enjoy doing the experiment? The effects of mixing time, amplitude, frequency, fill level, and mixing vessel geometry were evaluated to . 4 clear glass jars of the same size (we used pint sized mason jars). the calculated density of the ball bearings, which have an average density of 7581. This means that when the temperature goes up, viscosity goes down, and when the temperature goes up, viscosity goes down. directly proportional to the velocity gradient within the fluid, for most comm, relationship is described using the equation: [2], The methods in this experiment determine the dynamic viscosity through dropping. Content may be subject to copyright. and the procedure is described in Section4. that the premise and assumption of laminar flow was a somewhat optimistic one, especially so in the case of On the second graph, plot the K values for the fittings (y-axis . The rate of this momentum Temperature in Farenheight Time in secs Cold 28.20 2246.80 Room Temp 72.70 336.51 Hot 208.00 1.43. With the use of similar apparatus equipment through constant temperature at atmospheric pressure, the viscosity will be determined by tests in two different fluids in sets of two ball trials; along with data collected from a third set. Lab Report regarding viscosity experiment. Fluids with high viscosity act the opposite; they are thick and it is hard for objects to move through them. What was the conclusion of the experiment? The results indicated that although the viscosity was within an acceptable range of assumed to be the same as that of the viscosity. Large 1 0. Drop 3 133 0. Microscope Lab Report Conclusion Questions: . - 1 Thermometer As fluid move in downward direction drag force and, When the net force is zero in object, then object attains a terminal velocity, so upward force equal to, In laminar flow there is no disruption between adjac, turbulence fluid motion, the resistance result from velocity fluctuation of t, loss. 13. The experiment shows that the slower the time, the higher the viscosity is for a liquid and the faster the time, the lower the viscosity is for a liquid. The viscometer constant was also examined and calculated for a hypothetical situation. Go Premium and unlock all 10 pages Access to all documents Get Unlimited Downloads Improve your grades Upload Share your documents to unlock Free Trial Get 30 days of free Premium Already Premium? 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Suggestions for future work that might provide deeper insight into the problem should be included. Then, we cool the honey down by putting it into the freezer. Viscosity is the measure of the internal friction in a liquid or the resistance to a flow. Use the template provided to prepare your lab report for this experiment. Since velocity is equal to distance divided by time, velocity is inversely proportional to time as well. The conclusion of a lab report summarizes the experiment and its results and states whether the goals of the experiment were met. Cross-Linking Poly (vinyl alcohol) with Sodium Borate Objective:The objective of this experiment is to explore the change in physical properties of a polymer as a result of cross-linking. All other trademarks and copyrights are the property of their respective owners. Large 0 0. Use the template provided to prepare your lab report for this experiment. The pipe flow investigation compared the fluid flow of smooth and rough pipes of varying diameters. Obviously this is not the case Fi; g. I. under ordinary conditions of measurement, but as a result of experiments by Poiseuille, it is generally assumed that a pressure po may be employed Drop 1 134 0. applying the appropriate equations the viscosity of the fluid was determined. Below are 5 core components of a good conclusion for any scientific lab report: Restate the Experiment's Goals. For example, honey is more viscous than water. Academia.edu uses cookies to personalize content, tailor ads and improve the user experience. Nezha has a Damask in his hand (like an optical fiber) and a Universe Circle (like the Vernier effect) to sense and control the dragon's . Drop 1 214 0. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Castor oil 1. . Our body senses molecules jumping around a lot as heat. Glycerin 21. Sphere Weight[g] Diameter[cm] Density[kg/m 3 ] This should be based on the data that was collected and should be backed up by your discussion of the findings. calculated can be found in the tables bellow. You do not need to go into detail, but you should make sure that all of the important information is included. The experiment shows that the slower the time, the higher the viscosity is for a liquid and the faster the time, the lower the viscosity is for a liquid. For example, if you used a spectrophotometer to measure the amount of light that was absorbed by a plant, you would want to mention this in your conclusion. copyright 2003-2023 Study.com. R = ..ohm, Which of the following forces are dissipative in nature. The results of this experiment showed that the concentration of salt had a negative effect on the rate of photosynthesis. the following equation These ways included using a measuring beaker, Eureka can, and density bottle; these different ways are gone into more detail in the methods section. Room Temperature (72.7F)First, we fill a graduated cylinder with six inches of honey, which is our liquid that were experimenting with. Re =viscous forcesinertial forces =u 0 L (10) Conclusion For this experiment, its main objective is to determine the viscosity of a certain fluid. Each glass should be filled almost to the top, so you might need to add more or less liquid than one cup. During the experiment the relationship between the drop distance of the balloon and the time taken to travel that distance were investigated. Drop 3 146 0. Finally, the conclusion should offer a brief interpretation of the data, and state whether the goals of the experiment were met. Thats nearly half an hour! this is to look at the flow of water versus the flow of syrup. This experiment was successful in answering the research question posed at the beginning of the lab report. Medium 0 0. If you're having trouble timing the marble in water, which moves pretty fast, record the trial on your phone in a video. From the diagram, it can be clearly seen that the curve shifts in the direction of higher viscosity . In conclusion, the experiment proved that the lift coefficient increases as the angle of attack increases and the Reynolds Number increases up to a certain critical angle of attack. Introduction Practical investigation into Viscosity in liquids(Stokes Law) Introduction When dealing with fluid/mechanical systems, it is important to know what affects the rate of descent of an object through a liquid. A graph of the experimental friction factor was compared . 65 NSA/AMA ), it appeared that the time needed to get this viscosity could reach about 12 seconds. To learn more, view ourPrivacy Policy. After pouring the honey back into the graduated cylinder, we drop the metal piece into the cylinder, and time it. Medium 7 1 7758. 10. GCD210267, Watts and Zimmerman (1990) Positive Accounting Theory A Ten Year Perspective The Accounting Review, Subhan Group - Research paper based on calculation of faults. This is where you will summarize all of your findings, and explain what they mean for your experiment. Formulubla 3 - Sammanfattning International Finance, Introduction to Operations and Process Management - Summary. Drop Frames 240 /s Velocity[m/s] Discuss discrepancies and anomalies in your data. The higher the relative velocity v of the plates and the smaller the distance y between the plates, the greater the shear stress. Note: Do not remove the densitometer from the cylinder with a particular liquid. - 3 Cylindrical Containers with the same size containing: Glycerin, Motor Oil and Castor Oil Include and Analyze Final Data. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What was a major objective of this part of the experiment? Drop 3 51 1. the Motor oil. When you are writing a lab report, the conclusion is one of the most important sections. This was quite impossible in our experiment to be obtained. Hint: What is the experiment title? A moody diagram was plotted comparing the friction factor versus the Reynolds number. the fluid that are moving different velocity. The answer is a property of liquids called viscosity. Additional materials, such as the best quotations, synonyms and word definitions to make your writing easier are also offered here. There are number of different techniques by which fluid's resistance to flow is measured. through our mathematical operations and estimate the total uncertainty of our final calculated viscositys. As the concentration of salt increased, the amount of light that was absorbed by the plant decreased. The density distribution was analyzed for a mixture of high-melting explosive (HMX) and trinitrotoluene (TNT). Your email address will not be published. All rights reserved. I would definitely recommend Study.com to my colleagues. body diagram shown in figure 1 shows the forces acting on the ball as it descends down the fluid column. Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, L.N.Gumilyov Eurasian National University, Kwame Nkrumah University of Science and Technology, Jomo Kenyatta University of Agriculture and Technology, Bachelor of Business Administration (BBA), Leadership and Management in Nursing (NR06), Avar Kamps,Makine Mhendislii (46000), Power distribution and utilization (EE-312), Chapter 5 - Test bank of Management Information Systems, 14e (Laudon). (2) An ammet DOCX, PDF, TXT or read online from Scribd, 100% found this document useful (5 votes), 100% found this document useful, Mark this document as useful, 0% found this document not useful, Mark this document as not useful. Report. Gather four clear glass jars and fill one with water, one with corn syrup, one with cooking oil and one with honey. We'll not send Although the viscosity was within an "acceptable" range of what was expected, the Reynold numbers suggest In future experiments, it may be necessary to use a more controlled setting to reduce the variability of the data. Start by filling each glass with one of the liquids. Describe the relationship between viscosity and crosslinking? exchange determines the viscosity of the fluid and contributes to its total resultant force or inertia. Even though doing these methods to reduce the error percentage there will still be some minor errors. Cite this page Viscosity Research Paper Pages: 2 (520 words) This experiment developed our way of thinking and knowledge, where this experiment is a minimized example for the velocity of different types of fluids in pipes due to their viscosity and the floating of liquids above water or underwater due to their density. Viscosity measurements can vary depending on the accuracy of the test equipment. the frictional shear forces between them. Writing a conclusion in a lab report can be tricky, especially if you are not sure what to include. 10. Ball bearings of various sizes were then dropped into She has a Master's Degree in Cellular and Molecular Physiology from Tufts Medical School and a Master's of Teaching from Simmons College. If you were pushing a box on a shag carpet versus ice, which one will the box slide farther on? 2401 secandtis the average fall time in frames for each bearing size. Two experiments (8 + 8 marks) are asked from each section in the practical exam. Drop 2 42 1. Report. tis the inaccuracy of the time measurement Cooled down (28.2-69.4F)(While the metal piece sank, the honey slowly warmed up.). The distance at which the sphere was dropped from, could have affected the terminal velocity. AMAZING RACE: MEASURING THE VISCOSITY OF SOME LIQUIDS LABORATORY REPORT EVALUATION FORM GENERAL CHEMISTRY 2 LAB ACTIVITY 6 LAB REPORT RUBRIC. Revised on July 15, 2022. Drop 2 44 1. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What was a major objective of this part of the experiment? This is a Premium document. Density was measured three separate ways, each having its own level of accuracy. - 1 Caliper, Figure 3: Cylindrical containers - Glycerin, Motor Oil and Castor Oil, WhereWsystemis the systematic deviation,mis the advertised inaccuracy of the scale estimated to be This experiment developed our way of thinking and knowledge, where this experiment is a minimized example for the velocity of different types of fluids in pipes due to their viscosity and the floating of liquids above water or underwater due to their density. The results showed that as the concentration of salt increased, the rate of photosynthesis decreased. Report, Drop Frames 240 /s Velocity[m/s] There was a high degree of variability in the data, which could be attributed to the fact that the plants were not kept in a controlled environment. If the friction is high, it's going to slow down the marble and it will take more time for it to reach the bottom, meaning it's moving with a smaller velocity. We will include tips on formatting and structure, as well as how to effectively communicate your findings. The experiment also developed turbulent flow, laminar flow, and compared measured and calculated head losses in pipes at varying velocities. balls were weighted on a scale and their diameter measured with a caliper, the measurements were collected In our case, to determine the viscosity of the different fluids, first we need to assume that the flow is laminate From the pressure diagrams, it was concluded that there was a high-pressure gradient at the leading edge and decreased through the aerofoil. Large 8 1 7258. Clean the glass jar and fill it with the viscous fluid. And I also guessed right because the cheerios were the cereal where the water passed faster. Motor Oil 22. the resistance to an externally applied shear stress. The data suggest that high concentrations of salt can inhibit the process of photosynthesis, which has important implications for the agriculture industry. A viscometer consists of a graduated glass cylinder lled with the liquid in question, in our case glycerin. This suggests that high concentrations of salt can inhibit the process of photosynthesis. Stokes's law states that: Where v is the velocity of the ball, g is acceleration due to gravity, r is the radius of the sphere, d1 is the density of the sphere, and d2 is the density of the liquid. @2019 - All Right Reserved. Briefly describe the main findings of your experiment and discuss how they answer your research question or support your hypothesis. Small 2 0 7728. After that, well record its viscosity by dropping a metal piece and recording the amount of time it took to reach the bottom. Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. 311 Comments Please sign inor registerto post comments. Comments/ extra information on viscosity experiment: Strain is the geometrical measure of deformation representing the relative displacement between particles in the material body, i.e. HypothesisMy hypothesis is that when the temperature goes up, the viscosity goes down, and when the temperature goes down, the viscosity goes up. Cooking Oil (enough to fill one jar) We used Vegetable Oil, but any Cooking Oil will work. Calculate the slope of these graphs, using the equation of . LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) - What conclusions can you draw regarding the viscosity and solubility of a polymer as a function of crosslinking? MEASURING VISCOSITY OF DIFFERENT FLUIDS USING BALL DROP METHOD. 005 gandmis the weight of each individual bearing size. What Melts Ice Fastest? different diameter, different density of oil and stop watch. Enrolling in a course lets you earn progress by passing quizzes and exams. In deriving the well-known viscosity formula v=--- ngr4pt mnplv 8vl 8ntl it is assumed that the pressure is constant during the time of flow. Medium Temperature [C] The experiment was conducted by releasing each ball bearing size 3 times into the fluids. To study the dependence of the nematode concentration on the suspension viscosity, we conducted the experiments with three different volume fractions () = 2.26%, 4.52%, and 9.04% keeping all the other parameters constant as shown in Fig. To understand viscosity, let's compare it to solid surfaces and friction. You can download the paper by clicking the button above. The point of your lab report is not to merely confirm what you expect. When the rate of shearing strain is directly proportional to the shearing stress, the constant of proportionality is called as absolute viscosity or dynamic viscosity. buoyancy is given by the following equation, Wherefluidis the density of the fluid,Vis the volume of the sphere andgis the gravitational acceleration. are off by 2. Honey sure has high viscosity! to deformation, can be understood by looking at two layers of the same fluid traveling at different speeds and This suggests there is a factor in the measurements or premise thats causing a systematic By using our site, you agree to our collection of information through the use of cookies. Repeat step 2 for the remaining liquids. Discuss your results, focusing on the following: Bacteria Lab Report. in table 1. It is determined that honey has the highest viscosity and the slowest time while water has the lowest viscosity and the fastest time. Accordingly, one possible justification for this problem could have been the liquid unknown type, which we assumed to be Castro. 10. R= R1 + R2 =ohm+.ohm=..ohm Experiment Biological Diversity [k6nqwo3ve1nw] 2022-10-13 . Results are discussed in Section5and the conclusions are drawn in Section6. Lab 1 - Viscosity Lab Report More info Download Save This is a preview Do you want full access? LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) Describe the technique you used to measure viscosity and determine crosslinking. Drop Frames 240 /s Velocity[m/s] ResearchGate has not been able to . As the last treatment, the filtered membranes were dried in an oven model G-2100 (F.LLI GALLI G. & P. snc, Pieve Emanuele, MI, Italy) at 40 C for 2 h to complete the self-assembly by evaporating residual water. Higher the viscosity of liquid bitumen, the more nearly it approaches a semi-solid state in consistency. Because Viscosity changes with temperature and . Viscosity is strongly related to the temperature and it also depends on the shape of object. Conclusion for experiment diversity of bacteria.These bent rods are often called vibrios and include Vibrio cholerae, which causes Bacteria are the smallest living Staphylococcus aureus are up to 1 m in diameter. An adult had to help with the stove/ heating. Thick liquid is said to be more viscous than a thin liquid of the road Next, it is important to discuss any sources of error that may have occurred during the experiment, and how they may have affected the results. The measured viscosity of water matched the theoretical value. 1. You can choose any fluids you want, but we'll suggest some here that work well: ketchup, vegetable oil and water. When a molecule from a slower moving layer moves up in to a faster Because of this, if a solid object is dropped into a fluid of lesser density. State Whether Your Experiment Succeeded, Science: Lab report Learn HQ Monash University, Writing conclusion paragraphs in a science lab report, The Lab Report University of Toronto Writing Advice, How to Write a Scientific Laboratory Report. The DNA cleavage (in dark) and . Designed and Developed by Online Homework Help, How to write a conclusion for a lab report + examples, How to write a descriptive essay about favourite food, Ethnographic Essay: how to write an ethnography paper, Data analysis section of a research paper, How to write an introduction for a lab report, How to write a biology lab report + examples, How to write a discussion in a lab report + examples, How to write an executive summary for a lab report + examples, How to write an abstract for a lab report, How to write a lab report for chemistry + Examples, How to Write a Conclusion for a Lab Report, 5.
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