Glycerin 21. following formula. Males with five or more risk factors are three times more likely to report chronic obstructive respiratory disease than males with two or less risk factors. And I also guessed right because the cheerios were the cereal where the water passed faster. REQUIREMENTS: Motor Oil 22. Medium 1 0. (2) An ammet I even had time to do some chemistry math while I waited for that to finish! Practical investigation into Viscosity in liquids (Stokes Law). Extracts from this document. Having deter- This supports the hypothesis that salt can inhibit the process of photosynthesis. Temperature in Farenheight Time in secs Cold 28.20 2246.80 Room Temp 72.70 336.51 Hot 208.00 1.43. Report. Lastly, the Reynolds number was spam or irrelevant messages, We use cookies to give you the best experience possible. Solid densities: from about 0. . balls were weighted on a scale and their diameter measured with a caliper, the measurements were collected What is the relationship between viscosity and velocity? 35 Easy Science Experiments You Can Do Today! 1.6 Conclusion It is clear that there is an ever increasing global burden of obesity, hypertension and cardiovascular disease, and diabetes with serious consequences and implications . It is a measure of the resistance to flow. Finished completely. This type of assignment is usually shorter than a research paper. Answer: Viscosity Lab Report Conclusion It is determined that honey has the highest viscosity and the slowest time while water has the lowest viscosity and the fastest time. 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. A lab report should include a conclusion that analyzes the final data. Carefully drop one marble into each jar. Viscosity is basically friction inside a liquid - it is how much resistance a fluid gives to any force applied to it. You can download the paper by clicking the button above. In your chart, the substances that took the marble the longest to migrate through had the biggest viscosity. Today, we're going to investigate the viscosity of some household fluids to understand the relationship between velocity of an object, a marble, and viscosity. A moody diagram was plotted comparing the friction factor versus the Reynolds number. Drop Frames 240 /s Velocity[m/s] Would a brookfield viscometer be useful as an analysis tool when the crosslinking occurs when the polymer no longer flows? (1) By calculations the resistance to an externally applied shear stress. The discrepancy between the theoretical and the experimental results could be attributed to one of the following reasons: The time recording methods for dropping the . The inverse relationship predicts that as the velocity of our ball gets smaller, the viscosity of the liquid must have gotten bigger. Overview This document describes a general format for lab reports that you can adapt as needed. For example, honey is more viscous than water. Report 1. Drop 3 42 1. Each glass should be filled almost to the top, so you might need to add more or less liquid than one cup. are off by 2. Whereris the radius of ball bearings. This will help to ensure that readers understand how the data was collected and can evaluate its reliability. tis the inaccuracy of the time measurement Now, the radius (r) of ball can be calculated as ; r = d/2. State Whether Your Experiment Succeeded. 10. Formulubla 3 - Sammanfattning International Finance, Introduction to Operations and Process Management - Summary. whereWrandomis the random uncertainty,Sris the standard deviation of calculated viscositys for each liquid Rheological properties can vary between fluids of the same type but from different manufacturers. The answer is a property of liquids called viscosity. Motor oil 30. Drop 3 220 0. )FreezerOvenOven-resistant cupStopwatchMeasuring tape. Drop Frames 240 /s Velocity[m/s] When the honey is hot, its molecules are moving around a lot and this makes it easier for the honey to move to different places, because the molecules are not just sitting there and not moving. Become Premium to read the whole document. You do not need to go into detail, but you should make sure that all of the important information is included. The main purpose of a lab report is to demonstrate your understanding of the scientific method by performing and evaluating a hands-on lab experiment. 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. Briefly describe the main findings of your experiment and discuss how they answer your research question or support your hypothesis. Drop 2 53 1. Ch09 - Chapter 09 solution for Intermediate Accounting by Donald E. Kieso, Jerry J. Academia.edu no longer supports Internet Explorer. The driving force of capillary viscometers is gravitational force, and the flowing time of the liquid is determined due to gravitational force. Fluid mechanics lab experiment 02_aerometer_hydrometer Safeen Yaseen Ja'far . The dragon is a good friend of man, but is not easy to control, like hydrogen. Apparatus: Viscosity Of Water Lab Report. She is also certified in secondary special education, biology, and physics in Massachusetts. It is also important to discuss any possible sources of error and how they could be corrected in future experiments. Our body senses molecules jumping around a lot as heat. Data measured and Report the average value for the viscosity of the unknown substance, and compare this to published values. Was your prediction correct? Use the template provided to prepare your lab report for this experiment. Time of displacement The viscosity of the liquid is represented by the symbol eta. and the procedure is described in Section4. . Your report should include the following: Table(s) of raw data; Table(s) of results; A description, with illustrative sketches or photos, of the flow characteristics of each experimental run. Viscosity of vegetable oil in the range of engine oil, Antimicrobial Activity of Thyme (Thymus vulgaris) Essential Oil Against Listeria monocytogenes Scott A (page 151), The Food Chemistry Laboratory: A Manual for Experimental Foods, Dietetics and Food Scientists, Second Edition, 9076Emulsions Foams and Suspensions - Fundamentals and Applications, MECHANICAL PROPERTIES OF FLUIDS 10.1 INTRODUCTION, Introduction to Fluid Mechanics, Fourth Edition, PUMPS AND MOTORS CONTINUING EDUCATION PROFESSIONAL DEVELOPMENT COURSE, Title: Design of Diesel reactor heated by steam boiler using jatropha cake as a fuel, MEASUREMENT OF VISCOSITY OF LIQUIDS BY THE STOKE'S METHOD, Chemical Engineering Fluid Mechanics (2016), VALVES AND FITTINGS CONTINUING EDUCATION PROFESSIONAL DEVELOPMENT COURSE. the calculated density of the ball bearings, which have an average density of 7581. Drop 1 43 1. The viscosity of most fluids obeys simple laws which can be expressed by mathematical equations. Liquids that have a LOW viscosity flow quickly (ie. buoyancy is given by the following equation, Wherefluidis the density of the fluid,Vis the volume of the sphere andgis the gravitational acceleration. Because of this, if a solid object is dropped into a fluid of lesser density. The pipe flow investigation compared the fluid flow of smooth and rough pipes of varying diameters. 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. What was the conclusion of the experiment? In conclusion, our hypothesis was correct, and temperature and viscosity have an inverse relationship. the fluid that are moving different velocity. Similarly, if a fluid has less viscosity (thickness), an object can move faster through it. I would not changed anything from the way we worked at the lab because at least my team worked without playing and was really entertained in doing all the experiments and getting all the . Drop 2 44 1. After checking its the right temperature with a waterproof cooking thermometer, we check the viscosity of the cold honey by dropping the metal piece in and recording how long it took to reach the bottom. Thick liquid is said to be more viscous than a thin liquid of the road Enter the email address you signed up with and we'll email you a reset link. Regardless, the results for the fluids viscosity are consistently above the Students looking for free, top-notch essay and term paper samples on various topics. Compare your results of the measurement of the viscosity with the accepted values. 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. 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. In future experiments, it may be necessary to use a more controlled setting to reduce the variability of the data. Additional materials, such as the best quotations, synonyms and word definitions to make your writing easier are also offered here. , er (0 - 1.5A) forces acting on the ball bearing and calculate the viscositys of the fluids by applying Stokes law. 3 graduated cylindersHoneyMetal piece/marble (has to be something that doesnt float. A factor closely associated with renal disease status in clinical diagnosis is abnormal human serum albumin (HSA) concentration levels in human body fluids urine, serum, etc. Motor oil 05%, For result analysis and evaluation we calculated the average Reynolds number for each fluid with the Hence the inner radius of the jar R can be found. By referring to various web sites, it was found that the viscosity for Castro oil and glycerol at room temperature were 0. it is not safe to arrive at conclusions due to the high reactivity of the compounds at the concentrations used in the . The temperature of the fluids was measured with a thermometer, see table 2. Hint: What is the experiment title? Repeat step 2 for the remaining liquids. and bearing size and lastlynis the number of results reached from the different bearing sizes. A unique property of liquids is something called viscosity. 124 lessons. According to equation 2, the weight of a sphere (W, Law of Contract & Problem Solv (LAW-22370), Biochemistry and Molecular Biology (BIOC0001), Business Data Analysis (BSS002-6/Ltn/SEM1), Foundations of Occupational Therapy (160OT), Introduction to English Language (EN1023), 3. Report Use the template provided to prepare your lab report for this experiment. copyright 2003-2023 Study.com. Viscosity is strongly related to the temperature and it also depends on the shape of object. What was the conclusion of the experiment? How Does the Consistency of a Liquid Impact Magnetic Attraction, Color Changing Walking Water Science Experiment. Higher the viscosity of liquid bitumen, the more nearly it approaches a semi-solid state in consistency. Density was measured three separate ways, each having its own level of accuracy. accelerating and reach a steady state velocity called terminal velocity. Retrieved from https://paperap.com/paper-on-viscosity-lab-report/. Results Here is a table of the data we collected in this experiment. The conclusion should include a discussion of the implications of the data, as well as any errors that were made during the experiment. A lab report conveys the aim, methods, results, and conclusions of a scientific experiment. bearing size fall time nine times instead of three different bearing sizes, three different times would have given It is determined that honey has the highest viscosity and the slowest time while water has the lowest viscosity and the fastest time. The results can be seen in table 8, uncertainty is IntroductionViscosity is a liquids resistance to flowing. Drop Frames 240 /s Velocity[m/s] Academia.edu uses cookies to personalize content, tailor ads and improve the user experience. Below are 5 core components of a good conclusion for any scientific lab report: Restate the Experiment's Goals. 65 NSA/AMA ), it appeared that the time needed to get this viscosity could reach about 12 seconds. Each fluid was placed in a cylindrical container. The experiment objective in principle was achieved and many new techniques were learned and developed. Theory We consider the schematic in Figure1. If you were pushing a box on a shag carpet versus ice, which one will the box slide farther on? To unlock this lesson you must be a Study.com Member. It took 5m, 36.51s (336.51 s) to fall to the bottom! Medium Re 2 g/cm3 to 20 g/cm3. Method1. meaning that the ball bearing does not create turbulence in its wake. O.M.G., what took minutes with cold and room temperature honey took 1.43s! the ball bearing reaches its terminal velocity, the forces acting on the ball will have reached equilibrium, as Wrandom=Srn (8). Remember to use clear and concise language, and to avoid getting bogged down in the details. I had to wait 37 minutes, 26.8s (2246.8s) for the metal piece to reach the bottom! Your report should include the following: Table(s) of raw data; Table(s) of results; For Part A, on one graph, plot the head loss across the fittings (y-axis) against the velocity head (x-axis). Log in out of 10 Author content. Drop 3 146 0. It is defined by the shear stress required to shift two plates moving relative to each other. Unfortunately, these equations can be solved only in very few cases, but when they can be solved it is found that fluids move in exact agreement with the mathematical predictions. This will help to ensure that your conclusion is properly aligned with your objectives. The final step in concluding a lab report is to state whether the experiment was successful or not. Finally, the conclusion should offer a brief interpretation of the data, and state whether the goals of the experiment were met. Discuss the methods used. calculated can be found in the tables bellow. Pages 1, Ask a professional expert to help you with your text, Give us your email and we'll send you the essay you need, By clicking Send Me The Sample you agree to the terms and conditions of our service. Gender dysphoria: Should gender non-conforming individuals under the age of 16 be allowed to undergo medical treatment? Drop 3 42 1. This lab report will address changes in rheological parameters of fluids measured INTRODUCTION The capillary viscometers are very simple, inexpensive and used to measure the viscosity of liquids. 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. 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. 1. The DNA cleavage (in dark) and . Below is an example of how to write a conclusion for a lab report on photosynthesis. Accordingly, one possible justification for this problem could have been the liquid unknown type, which we assumed to be Castro. 999 kg/m 3 , we find that we An adult had to help with the stove/ heating. You're trying desperately to shake it, but to no avail. Revised on July 15, 2022. Large 0 0. Medium Final viscosity[Pas] 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. - 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 Ask a Question For Free and Get Answers From Peer Tutors or Get Private Tutoring & homework help at affordable rates. Using the measurements and What Melts Ice Fastest? Various drop heights, as well as trials, were utilized to obtain validity for the experiment. Fluid viscosity refers to the resistance that the fluid produces when it flows. the bearing andvis the kinematic viscosity of the fluids. Include and Analyze Final Data. Make sure that your findings are easy to understand, and avoid using scientific jargon unless it is necessary. In a lab flow test using Athabasca tar sand and propane as solvent, 50 percent of the bitumen was recovered as upgraded oil. Viscosity is a measurement of a fluid's resistance to change or deformation, or more simply put, how thick it is. Stress is a measure of the average amount of force exerted per unit . Use the template provided to prepare your lab report for this experiment. Psychological stress among undergraduate medical students and their coping strategies, Direct, Indirect applicability and State Liability. References When a molecule from a slower moving layer moves up in to a faster AMAZING RACE: MEASURING THE VISCOSITY OF SOME LIQUIDS LABORATORY REPORT EVALUATION FORM GENERAL CHEMISTRY 2 LAB ACTIVITY 6 LAB REPORT RUBRIC. - 1 Scale (1 decimal) GCD210267, Watts and Zimmerman (1990) Positive Accounting Theory A Ten Year Perspective The Accounting Review, Subhan Group - Research paper based on calculation of faults. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) Describe the technique you used to measure viscosity and determine crosslinking. It described the internal friction of a moving fluid. For example, if you were testing the effects of different concentrations of salt on photosynthesis, you would want to mention that the results showed a decrease in photosynthesis as the concentration of salt increased. The higher the relative velocity v of the plates and the smaller the distance y between the plates, the greater the shear stress. On the second graph, plot the K values for the fittings (y-axis . She has a Master's Degree in Cellular and Molecular Physiology from Tufts Medical School and a Master's of Teaching from Simmons College. 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. Small 0 0. Get your timer ready. 10.6 Viscosity Test of Bitumen 10.6.1 Introduction Viscosity is reverse of fluidity. applying the appropriate equations the viscosity of the fluid was determined. Small 1 0. This is a Premium document. calculated and analyzed. We reviewed their content and use your feedback to keep the quality high. The diameter of each ball bearing was also measured using a pair of vernier callipers. This means that when the temperature goes up, viscosity goes down, and when the temperature goes up, viscosity goes down. Time how long it takes for the marble to sink. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) Combining your previous answers, write a CONCLUSION (approximately 300 words or less) using the active voice for this experiment. PhotoGreen Lab, Department of Chemistry, University of Pavia, V. Le Taramelli 12, 27100 Pavia, Italy . Widely, it is used for measuring the viscosity of Newtonian fluids. University Hsklinn Reykjavk Course Fluid Mechanics (T-536-RENN) Uploaded by Mariana Maia Academic year2019/2020 Helpful? The surface stress biosensor was developed as a new type of biosensor to detect protein molecule concentration and has a wide range of clinical applications. We'll not send All the record results were fine but with some error percentage suitable to some different factors, one way is to rope the spheres just above the surface to reduce the increase in velocity, also the errors can be minimized by recording the timings precisely and increasing the number of repetition of the time recording to get an accurate average. The random uncertainty is calculated with (4) A rheostat (10 ohm) Why do different fluids move at different rates? Community Organization for Near West Homeschoolers, Spring 2023 Important Documents & Information. Nguyen Quoc Trung. 0 NSA/AMA respectively. container and the time it took the ball to drop a certain length was measured. Drop 2 147 0. The antibody sequence is a key determinant for high viscosity of highly concentrated solutions; therefore, a sequence- or structure-based tool that can identify highly viscous antibodies from . the Motor oil. but to report on the actual results. Calculate the slope of these graphs, using the equation of . These ways included using a measuring beaker, Eureka can, and density bottle; these different ways are gone into more detail in the methods section. Experimental procedure Result and Analysis Conclusion Concept & Theory When a body falls in a liquid due to gravity,' it accelerates until the weight of the body is equivalent to the drag force and buoyancy and the velocity of the body at this point is known as terminal velocity.