Time of displacement Repeat step 2 for the remaining liquids. This will help to ensure that readers understand how the data was collected and can evaluate its reliability. 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. Drop 3 42 1. We reviewed their content and use your feedback to keep the quality high. Hint: What is the experiment title? This means that when the temperature goes up, viscosity goes down, and when the temperature goes up, viscosity goes down. 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 . Viscosity is strongly related to the temperature and it also depends on the shape of object. The random uncertainty is calculated with Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, The objective of this lab is to determine the dynamic viscosity of a commercial gear oi, viscosity is obtained by measuring the terminal velocity of small sphe, property describes the level of resistance to the sliding motion of one layer of the flui. Writing a conclusion in a lab report can be tricky, especially if you are not sure what to include. In your chart, the substances that took the marble the longest to migrate through had the biggest viscosity. Castor oil 17% The results showed that as the concentration of salt increased, the rate of photosynthesis decreased. Academia.edu uses cookies to personalize content, tailor ads and improve the user experience. The answer is a property of liquids called viscosity. calculated and analyzed. P1 - Practices digital signal processing are practices p1,p2,p3. What steps did you take to conduct your experiment? 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). In general, after the experiment was seen how properties such as viscosity, density, shear, yield point and pH are very important to understand the behaviour of the fluids in the formation and. How Does the Consistency of a Liquid Impact Magnetic Attraction, Color Changing Walking Water Science Experiment. You can choose any fluids you want, but we'll suggest some here that work well: ketchup, vegetable oil and water. Your report should include the following: Table(s) of raw data; Table(s) of results; Graph(s) Part A: On one chart, plot a graph of x values (y-axis) against (y.h) 1/2 values (x-axis) for each test. Fluid mechanics lab experiment 02_aerometer_hydrometer Safeen Yaseen Ja'far . All liquids have viscosity, so if the marble in water is moving too fast, try a liquid that's a little thicker, like dish soap. calculated can be found in the tables bellow. Create your account. , er (0 - 1.5A) With the condition of defining the composition of the mixture for several weeks, it could be analyzed that the separation of the substances yielded a condition of making a specific disntinction on how the volume of acetic acid in vinegar is affected by the concentration of the other elements that has been added into the substance. 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. Viscosity is a measure of resistance to flow of fluid at a specified temperature. 311 Comments Please sign inor registerto post comments. Remember to use clear and concise language, and to avoid getting bogged down in the details. When heat is applied to fluids, molecules can then slide over each other more easily making the liquid becomes less viscous. Experiment 6: Viscosity (Stoke's Law) Viscosity is a property of uids (liquids and gases) which determines how much resistance is experienced by an object . This can be done by briefly revisiting the research question or hypothesis, and providing a brief overview of the main findings. 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. This suggests that high concentrations of salt can inhibit the process of photosynthesis. enough to determine viscosity with an acceptable degree of accuracy and that perhaps, measuring the same accelerating and reach a steady state velocity called terminal velocity. 4. What is the relationship between viscosity and velocity? Students also viewed 4.1 - Efnislegar eignir Prentform MAVI Spurningar 1 Exam 11 December 2012, questions The apple juice had also higher density than the water itself. Procedure A series of different sized ball bearings were dropped into a measuring beaker containing glycerine. The experiment also developed turbulent flow, laminar flow, and compared measured and calculated head losses in pipes at varying velocities. It is a measure of a fluid's resistance to flow. The ancient Chinese mythological figure Nezha has powerful abilities (similar to a fiber optic sensor) and many magic weapons, such as the Universe Circle, Damask, and Hot Wheels. In a lab flow test using Athabasca tar sand and propane as solvent, 50 percent of the bitumen was recovered as upgraded oil. The experiment records and activities consist of 6 marks, the project has 3 marks and viva on the experiment consist of 5 marks. 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. case of the Motor oil. Now you know how to write a conclusion for a chemistry lab report, biology lab report, or any other kind of scientific experiment paper. By doing a reverse engineering calculation using the equation given in the lab sheet for Castro oil (0. 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. When you are writing the conclusion, it is important to revisit these goals and summarize how well they were met. Lets get started! mined both the random uncertainty and the systematic deviation were able analyse the propagation of error - Causes, Symptoms & Treatment, Anchorage Dependence: Definition & Overview, Aldosterone: Definition, Function & Effects, Working Scholars Bringing Tuition-Free College to the Community. Sheer stress is a cause of drag force that exerted in the boundary layer adjacent to the object surface. 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. The viscosity of a fluid describes its resistance to movement or deformation, an easy way of conceptualizing The greater the. the frictional shear forces between them. This site is using cookies under cookie policy . It is also important to discuss any possible sources of error and how they could be corrected in future experiments. The first step is to restate the goals of the experiment. Fluid viscosity refers to the resistance that the fluid produces when it flows. The pressure drop across the pipes was recorded to find both the friction factors and Reynolds numbers. [1] oil. Large 8 1 7258. Drop one marble at a time and observe what happens to the marble when it enters the liquid. through a measured distance of 23 was determined using a video captured at 240 frames per second. The results can be seen in table 8, uncertainty is Was your prediction correct? spheres of a known mass and density into an oil. Lab Report: Water and Ice Does ice have more or less volume than water. P2 - Practices digital signal processing are practices p1,p2,p3. Table 8: Mean Reynold Numbers from final results. but to report on the actual results. Record the time in your data table. Drop 3 133 0. Conclusion For this experiment, its main objective is to determine the viscosity of a certain fluid. 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. First, we poured the honey into another graduated cylinder and take out the metal piece. Measure the inner diameter of the jar using a vernier calipers. 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. oil, SAE-90 oil is 8.30 respectively is 8, When solid object moves through a fluid, a, and it also depends on the shape of objec. Gas densities: mostly in the range of a few grams per liter. Lastly, the Reynolds number was Before you start, make a prediction. 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. 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. Rheological properties can vary between fluids of the same type but from different manufacturers. A fluid can be a gas or a liquid, and it is easy to see that liquids are thicker than gases, and therefore have higher viscosities. A graph of the experimental friction factor was compared . Drop 2 218 0. Medium 1 0. (2) An ammet Drop 2 44 1. Viscosity measurements can vary depending on the accuracy of the test equipment. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What is the real-world implications from this experiment? 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 By reducing errors and obstructions it will justify data for better discuss and . Which liquid do you think the marble will fall fastest in? help. Table 1: Sphere Measurements and Calculated Density. 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. Calculate the slope of these graphs, using the equation of . The results indicated that although the viscosity was within an acceptable range of Each fluid was placed in a cylindrical container. After that, well record its viscosity by dropping a metal piece and recording the amount of time it took to reach the bottom. But, when you spill your water, it goes everywhere. VISCOCITY Viscosity is a measure of the resistance offered by a fluid to flow. 124 lessons. PhotoGreen Lab, Department of Chemistry, University of Pavia, V. Le Taramelli 12, 27100 Pavia, Italy . If the experiment did not meet its goals, be sure to explain why. If you want to drain a $480 \mathrm{mL}$ shake in 2.0 minutes, what pressure difference is needed? 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. Liquids that have a LOW viscosity flow quickly (ie. Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. Lab results and process calculations show that low-pressure, low-energy solvent-based in situ processes have considerable technical and economic potential for upgrading and recovery of bitumen and heavy oil. Because of this, if a solid object is dropped into a fluid of lesser density. Glycerin 21. Filtration time was 1.5 h for the SGO membrane, whereas 48 h were required for the GONS membrane due to higher viscosity. Drop 2 42 1. Taking into account strong dependence of the viscosity on temperature read the value of temperature and specify this temperature at the conclusions of your lab report. Data measured and From the diagram, it can be clearly seen that the curve shifts in the direction of higher viscosity . For example, honey is more viscous than water. The force of the The distance at which the sphere was dropped from, could have affected the terminal velocity. what was expected, the Reynolds number suggests that the premise and assumption of laminar flow was a Describe the relationship between viscosity and crosslinking? Small 0 0. Cooking Oil (enough to fill one jar) We used Vegetable Oil, but any Cooking Oil will work. In everyday terms (and for fluids only), viscosity is "thickness". balls were weighted on a scale and their diameter measured with a caliper, the measurements were collected Content may be subject to copyright. Motor Oil 22. Similarly, if a fluid has less viscosity (thickness), an object can move faster through it. Carefully drop one marble into each jar. Drop 3 146 0. Medium 0 0. The free When one variable gets bigger, the other gets smaller. Medium Final viscosity[Pas] 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. Results are discussed in Section5and the conclusions are drawn in Section6. The density distribution was analyzed for a mixture of high-melting explosive (HMX) and trinitrotoluene (TNT). Considering the fact that the Reynold numbers were consistently above one, perhaps we Cooled down (28.2-69.4F)(While the metal piece sank, the honey slowly warmed up.). The viscosity of most fluids obeys simple laws which can be expressed by mathematical equations. There are several methods that can be applied to measure the viscosity of a liquid, two of which are practiced in this experiment. (3) A voltmeter (0 - 1.5V) You do not need to go into detail, but you should make sure that all of the important information is included. Whereris the radius of ball bearings. Viscosity is one of the properties to describe the " fluidity " of fluid. 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. Why do you think that? (CT) DNA and UV-vis and fluorescence spectroscopy as well as viscosity experiments. 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 . Experts are tested by Chegg as specialists in their subject area. . 999 kg/m 3 , we find that we If you were pushing a box on a shag carpet versus ice, which one will the box slide farther on? 4 clear glass jars of the same size (we used pint sized mason jars). 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. References This was quite impossible in our experiment to be obtained. Small 2 0 7728. Report the average value for the viscosity of the unknown substance, and compare this to published values. Report 1. Compare your results of the measurement of the viscosity with the accepted values. Drop Frames 240 /s Velocity[m/s] Each glass should be filled almost to the top, so you might need to add more or less liquid than one cup. 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. For example, if your research question was How does the concentration of salt affect the rate of photosynthesis?, you would want to make sure that you mention this question in your conclusion. 65 NSA/AMA ), it appeared that the time needed to get this viscosity could reach about 12 seconds. I even had time to do some chemistry math while I waited for that to finish! 10.6 Viscosity Test of Bitumen 10.6.1 Introduction Viscosity is reverse of fluidity. (4) A rheostat (10 ohm) 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. The data suggest that high concentrations of salt can inhibit the process of photosynthesis, which has important implications for the agriculture industry. Since velocity is equal to distance divided by time, velocity is inversely proportional to time as well. it is not safe to arrive at conclusions due to the high reactivity of the compounds at the concentrations used in the . you She is also certified in secondary special education, biology, and physics in Massachusetts. This type of assignment is usually shorter than a research paper. In this experiment, you're going to learn about viscosity. Additional materials, such as the best quotations, synonyms and word definitions to make your writing easier are also offered here. different diameter, different density of oil and stop watch. This suggests there is a factor in the measurements or premise thats causing a systematic Get your timer ready. WhereReis the Reynolds Number,u 0 is the terminal velocity,Lis the characteristic length or diameter of Heated honey (208F)First, we poured honey into a microwave-resistant cup, and heated the honey to 208F. Report Use the template provided to prepare your lab report for this experiment. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. the resistance to an externally applied shear stress. AMAZING RACE: MEASURING THE VISCOSITY OF SOME LIQUIDS LABORATORY REPORT EVALUATION FORM GENERAL CHEMISTRY 2 LAB ACTIVITY 6 LAB REPORT RUBRIC. Ch09 - Chapter 09 solution for Intermediate Accounting by Donald E. Kieso, Jerry J. 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. Drop 1 43 1. Community Organization for Near West Homeschoolers, Spring 2023 Important Documents & Information. Nguyen Quoc Trung. By using our site, you agree to our collection of information through the use of cookies. The simplest case refers to a lubrication model and is represented by the ow of a non-Newtonian power-law uid between two smooth parallel plates 2401 secandtis the average fall time in frames for each bearing size. What was the conclusion of the experiment? 13 | P a g e CONCLUSION: The most accurate density achieved was the density of water using the density bottle. Glycerin 3. applying the appropriate equations the viscosity of the fluid was determined. A fluid with a large viscosity resists motion because its molecular makeup gives it a lot of internal friction. On the second graph, plot the K values for the fittings (y-axis . 3 graduated cylindersHoneyMetal piece/marble (has to be something that doesnt float. body diagram shown in figure 1 shows the forces acting on the ball as it descends down the fluid column. 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. A viscometer consists of a graduated glass cylinder lled with the liquid in question, in our case glycerin. are off by 2. Viscosity Experiment. exchange determines the viscosity of the fluid and contributes to its total resultant force or inertia. Thick liquid is said to be more viscous than a thin liquid of the road Restate the Experiment's Goals. Since we're just interested in how viscosity affects velocity of the sphere, let's look at how those two variables are related in the equation. The answer is a property of liquids called viscosity. Glycerin 110% The ice has less friction, so the box will slide further. REQUIREMENTS: All rights reserved. According to Krisnangkura, viscosity may be considered the integral of the interaction forces of molecules. Conclusion: Below are 5 core components of a good conclusion for any scientific lab report: At the beginning of your lab report, you should state the goals of your experiment. can attribute a part of this systematic error to turbulence and the increased drag thereof, especially so in the These ways included using a measuring beaker, Eureka can, and density bottle; these different ways are gone into more detail in the methods section. 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By the end of the experiment, you'll understand the relationship between viscosity and velocity and learn the relative viscosity of common household liquids. Hint: What is the experiment title? acting on the sphere but the sum of all the forces will be zero. From the pressure diagrams, it was concluded that there was a high-pressure gradient at the leading edge and decreased through the aerofoil. Log in out of 10 Briefly describe the main findings of your experiment and discuss how they answer your research question or support your hypothesis. The experiment was not without its flaws, however. You can download the paper by clicking the button above. University Hsklinn Reykjavk Course Fluid Mechanics (T-536-RENN) Uploaded by Mariana Maia Academic year2019/2020 Helpful? Applying equation (1) and solving forwe can calculate the viscosity. A moody diagram was plotted comparing the friction factor versus the Reynolds number. 2003-2023 Chegg Inc. All rights reserved. 2 g/cm3 to 20 g/cm3. Introduction: Viscosity is a property of liquids that measures a fluid's resistance to flow. Viscosity is basically friction inside a liquid - it is how much resistance a fluid gives to any force applied to 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 . Having deter- What was the conclusion of the experiment? A lab report conveys the aim, methods, results, and conclusions of a scientific experiment. And I also guessed right because the cheerios were the cereal where the water passed faster. Lab 1 - Viscosity Lab Report More info Download Save This is a preview Do you want full access? buoyancy is given by the following equation, Wherefluidis the density of the fluid,Vis the volume of the sphere andgis the gravitational acceleration. 13 chapters | The rate of this momentum When a molecule from a slower moving layer moves up in to a faster Fweight=Fdrag+Fbuoyancy (1), We calculate the drag force acting on the ball by using the Stokes law equation, whereis the viscosity,Ris the radius of the ball bearing andvis the velocity of the ball. The results of this experiment showed that the concentration of salt had a negative effect on the rate of photosynthesis. 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. Extracts from this document. Low viscosity fluids flow easily (water, alcohol); High viscosity fluids pour slowly (molasses, cold honey, etc.). Results Here is a table of the data we collected in this experiment. Viscosity Of Water Lab Report. The measured viscosity of water matched the theoretical value. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) Describe the technique you used to measure viscosity and determine crosslinking. Topic: The effect of salt concentration on the rate of photosynthesis. She has a Master's Degree in Cellular and Molecular Physiology from Tufts Medical School and a Master's of Teaching from Simmons College. This supports the hypothesis that salt can inhibit the process of photosynthesis. 13. 2. 2. - 3 Ball Bearings (Small, Medium and Large) 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. 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. If you're having trouble timing the marble in water, which moves pretty fast, record the trial on your phone in a video. Large 0 0. We'll not send By including all of this information, a lab report can provide a comprehensive overview of an experiment and its results. 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. Large 1 0. 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 . 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. Then slow it down to count the seconds it took for the marble to fall. Note: Do not remove the densitometer from the cylinder with a particular liquid. tis the inaccuracy of the time measurement Viscosity is the measure of the internal friction in a liquid or the resistance to a flow. Conclusion for experiment diversity of bacteria. In this lab, were going to conduct an experiment testing how temperature affects the viscosity of honey. LAB REPORT HYDRAULIC POLITEKNIK : SEMESTER 4 : PROPERTIES OF FLUID. Drop 2 53 1. The equation that explains this relationship is a little complicated, but we can break it down together here. Although the viscosity was within an "acceptable" range of what was expected, the Reynold numbers suggest Drop 2 135 0. Summarize the findings. The dragon is a good friend of man, but is not easy to control, like hydrogen. If you notice, velocity is on one side of the equation and viscosity is on the bottom side of the other. Why do different fluids move at different rates? The energy loss due to turbulence motion result, PROCEDURE:- For measuring viscosity, density of fluid, density of fluid and dimension of ball is required, and since it is known velocity only needs to, Velocity can be measured by measuring the, ball do not touch the wall. Accordingly, one possible justification for this problem could have been the liquid unknown type, which we assumed to be Castro. Include and Analyze Final Data. through the fluid, exerting a shear force on the fluid surrounding it. Finished completely. Now, the radius (r) of ball can be calculated as ; r = d/2. 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. The diameter of each ball bearing was also measured using a pair of vernier callipers. 005 gandmis the weight of each individual bearing size. Then, we cool the honey down by putting it into the freezer. Basically, they have an inverse relationship. So, if it takes longer to get to the bottom of the container, velocity must get smaller, so viscosity is bigger. 1. Lab Report regarding viscosity experiment. Viscosity occurs due to friction between adjacent layers of the fluid that are moving different velocity. The conclusion should include a discussion of the implications of the data, as well as any errors that were made during the experiment. 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. Two experiments (8 + 8 marks) are asked from each section in the practical exam. Controlled Variables: Amount of liquid, mass of the object. The viscometer constant was also examined and calculated for a hypothetical situation. The point of your lab report is not to merely confirm what you expect. 10. The result of adding more cross-linking agents to a polyme. Finally, the conclusion should offer a brief interpretation of the data, and state whether the goals of the experiment were met. Ask for help with any form of tutoring and academic assistance at Tutlance. water, rubbing alcohol, and vegetable oil). Experiment Biological Diversity [k6nqwo3ve1nw] 2022-10-13 . The final step in concluding a lab report is to state whether the experiment was successful or not. Drop Frames 240 /s Velocity[m/s] 1. Drop one marble into one fluid. Practical investigation into Viscosity in liquids (Stokes Law). Temperature in Farenheight Time in secsCold 28.20 2246.80Room Temp 72.70 336.51Hot 208.00 1.43. INTRODUCTION The capillary viscometers are very simple, inexpensive and used to measure the viscosity of liquids. Sphere Average Speed[m/s] Standard deviation Medium Re Which liquid has the highest viscosity? 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. - 1 Stopwatch/Video Recorder Writing a conclusion for a lab report can be tricky, but if you follow these five steps, you should be able to write a conclusion that is clear, concise, and effectively communicates the findings of your experiment. The viscosity of a liquid can be measured using a viscometer. Castor oil 1. 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. - 1 Scale (1 decimal) Viscosity is a liquid's resistance to flowing. 3. bearing size fall time nine times instead of three different bearing sizes, three different times would have given Drop Frames 240 /s Velocity[m/s] In this guide, we will discuss how to write a strong conclusion for a lab report. R = ..ohm, Which of the following forces are dissipative in nature. 35 Easy Science Experiments You Can Do Today! Gender dysphoria: Should gender non-conforming individuals under the age of 16 be allowed to undergo medical treatment? Drop 3 42 1. A milkshake has a viscosity of $0.50 \mathrm{Pa} \cdot$ s. To drink this shake through a straw of diameter $0.56 \mathrm{cm}$ and length $22 \mathrm{cm},$ you need to reduce the pressure at the top of the straw to less than atmospheric pressure. Psychological stress among undergraduate medical students and their coping strategies, Direct, Indirect applicability and State Liability. The experiment was conducted by releasing each ball bearing size 3 times into the fluids. Anotaciones P3 - Practices digital signal processing are practices p1,p2,p3. 1. The following are some observations about the numerical values of densities that should prove useful in problem solving situations. You're trying desperately to shake it, but to no avail. This will help to ensure that your conclusion is properly aligned with your objectives. 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. 5 g/ml to 3-4 g/ml. ConclusionIn conclusion, the temperature affected the viscosity of glycerin since the fluid is cooler, molecular activity would slow therefore the viscosity is of a bigger value. Cite this page Viscosity Research Paper Pages: 2 (520 words) to deformation, can be understood by looking at two layers of the same fluid traveling at different speeds and The lower the viscosity of a liquid, the thinner the liquid is and the less resistance it experiences. 3. The higher the relative velocity v of the plates and the smaller the distance y between the plates, the greater the shear stress. Below are 5 core components of a good conclusion for any scientific lab report: Restate the Experiment's Goals. The density of the ball bearings were calculated with the following formulas LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What was a major objective of this part of the experiment? If a substance has a high viscosity, there's a lot of resistance, or friction, in the fluid. spam or irrelevant messages, We use cookies to give you the best experience possible. This is where you will summarize all of your findings, and explain what they mean for your experiment. 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. Temperature in Farenheight Time in secs Cold 28.20 2246.80 Room Temp 72.70 336.51 Hot 208.00 1.43. in table 1. It took 5m, 36.51s (336.51 s) to fall to the bottom! I feel like its a lifeline. Become Premium to read the whole document. Medium 7 1 7758. Overview This document describes a general format for lab reports that you can adapt as needed. Drop Frames 240 /s Velocity[m/s] The purpose of this experiment was to find the viscosity of three different fluids, glycerin, castor oil and motor Conclusion. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Sphere Weight[g] Diameter[cm] Density[kg/m 3 ] the bearing andvis the kinematic viscosity of the fluids. Medium Temperature [C] Drop 3 51 1. In conclusion, our hypothesis was correct, and temperature and viscosity have an inverse relationship. Castor Oil 22. Introduction and Theory. All other trademarks and copyrights are the property of their respective owners. Discuss your results, focusing on the following: You can specify conditions of storing and accessing cookies in your browser, What is the conclusion of the lab report on measurement of viscosity of water, Aim : to determine the equivalent resistance of two resistors connected in series. Drop 1 43 1. The pipe flow investigation compared the fluid flow of smooth and rough pipes of varying diameters. 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. Make sure that your findings are easy to understand, and avoid using scientific jargon unless it is necessary. Which marbles sinkto the bottom of the jar quickly and which marbles sink to the bottle of the jar slowly. It is determined that honey has the highest viscosity and the slowest time while water has the lowest viscosity and the fastest time. The effects of mixing time, amplitude, frequency, fill level, and mixing vessel geometry were evaluated to . It described the internal friction of a moving fluid. Enrolling in a course lets you earn progress by passing quizzes and exams. a measure of how much a given displacement differs locally from a rigid-body displacement. Amanda has taught high school science for over 10 years. 3. In our case, to determine the viscosity of the different fluids, first we need to assume that the flow is laminate However, further sensitivity improvement is required to achieve . LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What was a major objective of this part of the experiment? Time how long it takes for the marble to sink. assumed to be the same as that of the viscosity. Higher the viscosity of liquid bitumen, the more nearly it approaches a semi-solid state in consistency. The only definitive conclusion we are capable of drawing is that three measurements are not The driving force of capillary viscometers is gravitational force, and the flowing time of the liquid is determined due to gravitational force. the Motor oil. Author content. (2) By Experiment We will include tips on formatting and structure, as well as how to effectively communicate your findings. 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. Lab Report regarding viscosity experiment. Re =viscous forcesinertial forces =u 0 L (10) Drop Frames 240 /s Velocity[m/s] and the procedure is described in Section4. To unlock this lesson you must be a Study.com Member. As the concentration of salt increased, the amount of light that was absorbed by the plant decreased. Revised on July 15, 2022. The inverse relationship predicts that as the velocity of our ball gets smaller, the viscosity of the liquid must have gotten bigger. Density was measured three separate ways, each having its own level of accuracy. 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. Academia.edu no longer supports Internet Explorer. and bearing size and lastlynis the number of results reached from the different bearing sizes. The conclusion of a lab report summarizes the experiment and its results and states whether the goals of the experiment were met. Our body senses molecules jumping around a lot as heat. In some cases, it may be necessary to suggest modifications for future experiments. 2. The DNA cleavage (in dark) and . Numerical investigations were conducted on the mixing efficiency of resonant acoustic mixing (RAM) technology using a high-viscosity mixture under vertically forced vibrations. Clean the glass jar and fill it with the viscous fluid. Solid densities: from about 0. us a better estimate of the viscosity. The true density of water is 1000 kg/m3 . How much did you enjoy doing the experiment? - Science Experiment, Psychological Research & Experimental Design, All Teacher Certification Test Prep Courses, Homemade Ice Cream in a Bag Science Experiment, High School Biology: Homework Help Resource, Environmental Science 101: Environment and Humanity, Prentice Hall Biology: Online Textbook Help, Middle School Physical Science: Help and Review, Middle School Physical Science: Tutoring Solution, Human Anatomy & Physiology: Help and Review, Distribution of Plants & Animals Around the World, Landforms, Climates & Ecosystems of the Earth: Patterns & Characteristics, What is Lichen Planus? 10. ResultsHere is a table of the data we collected in this experiment. 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. that the premise and assumption of laminar flow was a somewhat optimistic one, especially so in the case of A strong conclusion should briefly describe the methods used in the experiment. You can also try other liquids. Report. Its like a teacher waved a magic wand and did the work for me. EXPERIMENT TO DETERMINE THE VISCOSITY OF GLYCERINE. 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? Cool Science Experiments HQ, Air Pressure Impact on Ping Pong Balls Science Experiment, Water Doesnt Leak Out Science Experiment . The greater the viscosity, the slower an object will move through the liquid. this is to look at the flow of water versus the flow of syrup. In everyday terms (and for fluids only), viscosity is "thickness". 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? Abstract. Small 1 0. Viscosity describes the internal resistance to flow of a fluid (internal friction). Drop 2 147 0. Find the diameter (d) of the ball using the screw gauge. Of course, some liquids are more viscous than others. Sorry, preview is currently unavailable. This is a Premium document. MEASURING VISCOSITY OF DIFFERENT FLUIDS USING BALL DROP METHOD. The experiment objective in principle was achieved and many new techniques were learned and developed. Assignment Viscosity Experiment & Lab Report. The flow of a liquid depends on the Reynolds number as depicted in the equation below; Use the template provided to prepare your lab report for this experiment. Theory We consider the schematic in Figure1. the ball bearing reaches its terminal velocity, the forces acting on the ball will have reached equilibrium, as The Apparatus: 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. What Melts Ice Fastest? Motor oil 05%, For result analysis and evaluation we calculated the average Reynolds number for each fluid with the In future experiments, it may be necessary to use a more controlled setting to reduce the variability of the data. Sphere Average Speed[m/s] Standard deviation This should be based on the data that was collected and should be backed up by your discussion of the findings. R= R1 + R2 =ohm+.ohm=..ohm The conclusion provides the most important discoveries made during the experiment and how they addressed the original objectives of the experiment. An adult had to help with the stove/ heating. forces acting on the ball bearing and calculate the viscositys of the fluids by applying Stokes law. To learn more, view ourPrivacy Policy. @2019 - All Right Reserved. The time taken to travel between two marks on the beaker was recorded. shown in the equation below I had to wait 37 minutes, 26.8s (2246.8s) for the metal piece to reach the bottom! Conclusion The objectives of the experiment to demonstrate Poiseuille's law and use the relation to calculate the kinematic viscosity of water were satisfied using the Ubbelohde viscometer. error in our results. Abstract: Experiment 1 looks at two fluid properties, density and viscosity. Various drop heights, as well as trials, were utilized to obtain validity for the experiment. 794 %. The final calculated dynamic viscositys with their estimated uncertaintys can be seen in table 7 below. Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. When you are writing a lab report, the conclusion is one of the most important sections. Enter the email address you signed up with and we'll email you a reset link. Finally, the conclusion should offer some suggestions for further research. Retrieved from https://paperap.com/paper-on-viscosity-lab-report/. Viscosity Lab Report. This gives the two variables an inverse relationship. Stress is a measure of the average amount of force exerted per unit . Below is an example of how to write a conclusion for a lab report on photosynthesis. (1) Two resistors of unknown resistances It is defined by the shear stress required to shift two plates moving relative to each other. =mV (5), Wheremis the mass andVis the volume of the ball bearings. Content uploaded by Bilal Ahmad. State Whether Your Experiment Succeeded. Motor oil 30. the fluid that are moving different velocity. Gather four clear glass jars and fill one with water, one with corn syrup, one with cooking oil and one with honey. references values. Drop 1 146 0. Create an account to start this course today. The actual density of steel is equal to 7800 kg/m 3 , when compared to )FreezerOvenOven-resistant cupStopwatchMeasuring tape. Microscope Lab Report Conclusion Questions: . This is why it is perfectly acceptable to reject the hypothesis. Small metallic . Report, Same procedure is carried out for othe, Do not sell or share my personal information. The main source of error for a lab like this is human error. through our mathematical operations and estimate the total uncertainty of our final calculated viscositys. Bacteria Lab Report. 65 and 1. We completed the Viscosity Experiment in class on March 18th. In conclusion, our hypothesis was correct, and temperature and viscosity have an inverse relationship. Holy moly! I would definitely recommend Study.com to my colleagues. (2019, Nov 27). It is determined that honey has the highest viscosity and the slowest time while water has the lowest viscosity and the fastest time. Ball bearings of various sizes were then dropped into Drop 1 52 1. Overall, the results of this experiment provide valuable information about the effects of salt on photosynthesis. How did you know? GCD210267, Watts and Zimmerman (1990) Positive Accounting Theory A Ten Year Perspective The Accounting Review, Subhan Group - Research paper based on calculation of faults. . 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. 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. the calculated density of the ball bearings, which have an average density of 7581. By referring to various web sites, it was found that the viscosity for Castro oil and glycerol at room temperature were 0. 0. Liquid densities: from about 0. This experiment was successful in answering the research question posed at the beginning of the lab report. Drop 3 220 0. Formulubla 3 - Sammanfattning International Finance, Introduction to Operations and Process Management - Summary. IntroductionViscosity is a liquids resistance to flowing. Thats nearly half an hour! Obviously the syrup will flow slower than the water in 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 . What a big difference! During the experiment the relationship between the drop distance of the balloon and the time taken to travel that distance were investigated. Given this we are able to determine the 5(d). 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. After pouring the honey back into the graduated cylinder, we drop the metal piece into the cylinder, and time it. Students looking for free, top-notch essay and term paper samples on various topics. . Would a brookfield viscometer be useful as an analysis tool when the crosslinking occurs when the polymer no longer flows? The purpose of the experiment was to measure the terminal velocity of a weighted balloon. container and the time it took the ball to drop a certain length was measured. the following equation Worse yet, each professor wants something a little different. Discuss the methods used. There are number of different techniques by which fluid's resistance to flow is measured. Drop 1 214 0. 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. Because Viscosity changes with temperature and . ResearchGate has not been able to . Wrandom=Srn (8). meaning that the ball bearing does not create turbulence in its wake. Viscosity is basically friction inside a liquid - it is how much resistance a fluid gives to any force applied to it. whereWrandomis the random uncertainty,Sris the standard deviation of calculated viscositys for each liquid 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.