Then, we cool the honey down by putting it into the freezer. Clean the glass jar and fill it with the viscous fluid. Each fluid was placed in a cylindrical container. Restate the Experiment's Goals. 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. 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. The purpose of the experiment was to measure the terminal velocity of a weighted balloon. However, further sensitivity improvement is required to achieve . The density distribution was analyzed for a mixture of high-melting explosive (HMX) and trinitrotoluene (TNT). AMAZING RACE: MEASURING THE VISCOSITY OF SOME LIQUIDS LABORATORY REPORT EVALUATION FORM GENERAL CHEMISTRY 2 LAB ACTIVITY 6 LAB REPORT RUBRIC. Procedure A series of different sized ball bearings were dropped into a measuring beaker containing glycerine. 65 and 1. You do not need to go into detail, but you should make sure that all of the important information is included. She is also certified in secondary special education, biology, and physics in Massachusetts. Viscosity Of Water Lab Report. Basically, they have an inverse relationship. [1] Place a meter scale vertically beside the jar. Get your timer ready. Lastly, the Reynolds number was the calculated density of the ball bearings, which have an average density of 7581. O.M.G., what took minutes with cold and room temperature honey took 1.43s! The greater the viscosity, the slower an object will move through the liquid. The Physics Practicals For Class 12 CBSE is given here so that students can understand the experiments in a better way.experiment, we include viscosity and attempt to verify Poiseuille's . (2) An ammet We will include tips on formatting and structure, as well as how to effectively communicate your findings. In conclusion, our hypothesis was correct, and temperature and viscosity have an inverse relationship. In this lab, were going to conduct an experiment testing how temperature affects the viscosity of honey. Filtration time was 1.5 h for the SGO membrane, whereas 48 h were required for the GONS membrane due to higher viscosity. The main source of error for a lab like this is human error. Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. How did you know. 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. Conclusion: This is why it is perfectly acceptable to reject the hypothesis. Use the template provided to prepare your lab report for this experiment. The ice has less friction, so the box will slide further. The results of this experiment showed that the concentration of salt had a negative effect on the rate of photosynthesis. Experts are tested by Chegg as specialists in their subject area. Castor oil 1. Viscosity is a measure of the resistance of a fluid which is being deformed by ei- ther shear stress or tensile stress. 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. to deformation, can be understood by looking at two layers of the same fluid traveling at different speeds and Method1. Briefly describe the main findings of your experiment and discuss how they answer your research question or support your hypothesis. 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 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. Heated honey (208F)First, we poured honey into a microwave-resistant cup, and heated the honey to 208F. 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? Drop 2 42 1. . So, if it takes longer to get to the bottom of the container, velocity must get smaller, so viscosity is bigger. 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. Find the diameter (d) of the ball using the screw gauge. Its like a teacher waved a magic wand and did the work for me. a measure of how much a given displacement differs locally from a rigid-body displacement. The Report the average value for the viscosity of the unknown substance, and compare this to published values. The viscosity of a fluid describes its resistance to movement or deformation, an easy way of conceptualizing Abstract: Experiment 1 looks at two fluid properties, density and viscosity. 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 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. Lab Report regarding viscosity experiment. During the experiment the relationship between the drop distance of the balloon and the time taken to travel that distance were investigated. (2019, Nov 27). Calculate the slope of these graphs, using the equation of . Drop 1 43 1. - 1 Scale (1 decimal) 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. ResearchGate has not been able to . water, rubbing alcohol, and vegetable oil). Revised on July 15, 2022. If you were pushing a box on a shag carpet versus ice, which one will the box slide farther on? 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. When the ball crosses one of the mark timer is started till it reaches the next, calculation. When one variable gets bigger, the other gets smaller. 0. Content uploaded by Bilal Ahmad. 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. A moody diagram was plotted comparing the friction factor versus the Reynolds number. Whereris the radius of ball bearings. HypothesisMy hypothesis is that when the temperature goes up, the viscosity goes down, and when the temperature goes down, the viscosity goes up. 4 clear glass jars of the same size (we used pint-sized mason jars). - 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? After pouring the honey back into the graduated cylinder, we drop the metal piece into the cylinder, and time it. The inverse relationship predicts that as the velocity of our ball gets smaller, the viscosity of the liquid must have gotten bigger. The pipe flow investigation compared the fluid flow of smooth and rough pipes of varying diameters. ResultsHere is a table of the data we collected in this experiment. the ball bearing reaches its terminal velocity, the forces acting on the ball will have reached equilibrium, as Lab 1 - Viscosity Lab Report More info Download Save This is a preview Do you want full access? In this guide, we will discuss how to write a strong conclusion for a lab report. . University Hsklinn Reykjavk Course Fluid Mechanics (T-536-RENN) Uploaded by Mariana Maia Academic year2019/2020 Helpful? What steps did you take to conduct your experiment? Drop 3 133 0. Introduction and Theory. 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? Table 1: Sphere Measurements and Calculated Density. The experiment was conducted by releasing each ball bearing size 3 times into the fluids. 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 . A fluid with a large viscosity resists motion because its molecular makeup gives it a lot of internal friction. 2003-2023 Chegg Inc. All rights reserved. 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. But, when you spill your water, it goes everywhere. REQUIREMENTS: Obviously the syrup will flow slower than the water in the following equation What was the conclusion of the experiment? Numerical investigations were conducted on the mixing efficiency of resonant acoustic mixing (RAM) technology using a high-viscosity mixture under vertically forced vibrations. Viscosity is one of the properties to describe the " fluidity " of fluid. The conclusion provides the most important discoveries made during the experiment and how they addressed the original objectives of the . Drop one marble into one fluid. case of the Motor oil. calculated and analyzed. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) Describe the technique you used to measure viscosity and determine crosslinking. 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. Although the viscosity was within an "acceptable" range of what was expected, the Reynold numbers suggest By continuing well assume youre on board with our cookie policy, Dont waste Your Time Searching For a Sample, Two Factors Affect The Viscosity Of Magma, Reaction Of Alkali Metals With Water Lab Report, Coping With Water Scarcity, Poor Water Quality and Inadequate Sanitation, CH 456: Determination of Water Hardness of Filtered and Unfiltered Water, ASK writer for All rights reserved. Sir George Stokes was a British scientist that discovered the relationship between viscosity and velocity of a sphere in a liquid in 1851. Medium Re Hint: What is the experiment title? Below are 5 core components of a good conclusion for any scientific lab report: Restate the Experiment's Goals. Author content. Have you ever experienced the frustration of trying to get ketchup out of the bottle? How did you know? I feel like its a lifeline. Describe the relationship between viscosity and crosslinking? WhereReis the Reynolds Number,u 0 is the terminal velocity,Lis the characteristic length or diameter of 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 . Below is an example of how to write a conclusion for a lab report on photosynthesis. copyright 2003-2023 Study.com. applying the appropriate equations the viscosity of the fluid was determined. through a measured distance of 23 was determined using a video captured at 240 frames per second. Drop one marble at a time and observe what happens to the marble when it enters the liquid. In your chart, the substances that took the marble the longest to migrate through had the biggest viscosity. Drop Frames 240 /s Velocity[m/s] - 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 Content may be subject to copyright. through the fluid, exerting a shear force on the fluid surrounding it. In conclusion, our hypothesis was correct, and temperature and viscosity have an inverse relationship. Time of displacement Why do different fluids move at different rates? Small metallic . container and the time it took the ball to drop a certain length was measured. If the experiment did not meet its goals, be sure to explain why. =mV (5), Wheremis the mass andVis the volume of the ball bearings. Small 0 0. Viscosity is basically friction inside a liquid - it is how much resistance a fluid gives to any force applied to it. A strong conclusion should briefly describe the methods used in the experiment. LAB REPORT HYDRAULIC POLITEKNIK : SEMESTER 4 : PROPERTIES OF FLUID. 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 . A lab report should include a conclusion that analyzes the final data. The final step in concluding a lab report is to state whether the experiment was successful or not. acting on the sphere but the sum of all the forces will be zero. Sphere Average Speed[m/s] Standard deviation 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. Medium Temperature [C] Viscosity is strongly related to the temperature and it also depends on the shape of object. 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. IntroductionViscosity is a liquids resistance to flowing. 2. Regardless, the results for the fluids viscosity are consistently above the Viscosity occurs due to friction between adjacent layers of the fluid that are moving different velocity. We'll not send Report, I had to wait 37 minutes, 26.8s (2246.8s) for the metal piece to reach the bottom! 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. Stress is a measure of the average amount of force exerted per unit . us a better estimate of the viscosity. 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. somewhat optimistic one. Medium 7 1 7758. What a big difference! 1. Medium 1 0. Low viscosity fluids flow easily (water, alcohol); High viscosity fluids pour slowly (molasses, cold honey, etc.). Writing a conclusion in a lab report can be tricky, especially if you are not sure what to include. Having deter- 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. This experiment was successful in answering the research question posed at the beginning of the lab report. Because Viscosity changes with temperature and . Higher the viscosity of liquid bitumen, the more nearly it approaches a semi-solid state in consistency. Why do you think that? Report. 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. Medium 0 0. 5 g/ml to 3-4 g/ml. The result of adding more cross-linking agents to a polyme. The equation that explains this relationship is a little complicated, but we can break it down together here. Liquids that have a LOW viscosity flow quickly (ie. (1) By calculations Academia.edu uses cookies to personalize content, tailor ads and improve the user experience. 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. The true density of water is 1000 kg/m3 . 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. bearing size fall time nine times instead of three different bearing sizes, three different times would have given 311 Comments Please sign inor registerto post comments. help. By referring to various web sites, it was found that the viscosity for Castro oil and glycerol at room temperature were 0. Report. Gas densities: mostly in the range of a few grams per liter. Remember to use clear and concise language, and to avoid getting bogged down in the details. Microscope Lab Report Conclusion Questions: . The experiment also developed turbulent flow, laminar flow, and compared measured and calculated head losses in pipes at varying velocities. The greater the. The first step is to restate the goals of the experiment. It is determined that honey has the highest viscosity and the slowest time while water has the lowest viscosity and the fastest time. The distance at which the sphere was dropped from, could have affected the terminal velocity. The rate of this momentum Cooking Oil (enough to fill one jar) We used Vegetable Oil, but any Cooking Oil will work. the bearing andvis the kinematic viscosity of the fluids. 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. spheres of a known mass and density into an oil. You're trying desperately to shake it, but to no avail. Ch09 - Chapter 09 solution for Intermediate Accounting by Donald E. Kieso, Jerry J. You can download the paper by clicking the button above. 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. Honey sure has high viscosity! Create an account to start this course today. Drop Frames 240 /s Velocity[m/s] Lets get started! This suggests there is a factor in the measurements or premise thats causing a systematic It took 5m, 36.51s (336.51 s) to fall to the bottom! spam or irrelevant messages, We use cookies to give you the best experience possible. the same circumstance, this is because syrup has a higher viscosity than water reason for this resistance Re =viscous forcesinertial forces =u 0 L (10) (4) A rheostat (10 ohm) 10. Accordingly, one possible justification for this problem could have been the liquid unknown type, which we assumed to be Castro. Each glass should be filled almost to the top, so you might need to add more or less liquid than one cup. Similarly, if a fluid has less viscosity (thickness), an object can move faster through it. Extracts from this document. , er (0 - 1.5A) The conclusion of a lab report summarizes the experiment and its results and states whether the goals of the experiment were met. It described the internal friction of a moving fluid. Drop 3 220 0. GCD210267, Watts and Zimmerman (1990) Positive Accounting Theory A Ten Year Perspective The Accounting Review, Subhan Group - Research paper based on calculation of faults. - Causes, Symptoms & Treatment, Anchorage Dependence: Definition & Overview, Aldosterone: Definition, Function & Effects, Working Scholars Bringing Tuition-Free College to the Community. Your email address will not be published. this is to look at the flow of water versus the flow of syrup. 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. balls were weighted on a scale and their diameter measured with a caliper, the measurements were collected It is also important to discuss any possible sources of error and how they could be corrected in future experiments. Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. 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 the fluid that are moving different velocity. Glycerin 3. Our body senses molecules jumping around a lot as heat. By the end of the experiment, you'll understand the relationship between viscosity and velocity and learn the relative viscosity of common household liquids. Amanda has taught high school science for over 10 years. 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. Apparatus: This means that when the temperature goes up, viscosity goes down, and when the temperature goes up, viscosity goes down. Conclusion. Drop Frames 240 /s Velocity[m/s] The viscosity of most fluids obeys simple laws which can be expressed by mathematical equations. 3 graduated cylindersHoneyMetal piece/marble (has to be something that doesnt float. What Melts Ice Fastest? 3. The apple juice had also higher density than the water itself. you 2401 secandtis the average fall time in frames for each bearing size. Thats nearly half an hour! Even though doing these methods to reduce the error percentage there will still be some minor errors. Temperature in Farenheight Time in secsCold 28.20 2246.80Room Temp 72.70 336.51Hot 208.00 1.43. Repeat step 2 for the remaining liquids. What is the relationship between viscosity and velocity? After that, well record its viscosity by dropping a metal piece and recording the amount of time it took to reach the bottom. 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. (1) Two resistors of unknown resistances If you notice, velocity is on one side of the equation and viscosity is on the bottom side of the other. what was expected, the Reynolds number suggests that the premise and assumption of laminar flow was a Large 0 0. Drop 1 134 0. Abstract. I would definitely recommend Study.com to my colleagues. the resistance to an externally applied shear stress. The force of the Compare your results of the measurement of the viscosity with the accepted values. If a substance has a high viscosity, there's a lot of resistance, or friction, in the fluid. Drop 3 51 1. Drop Frames 240 /s Velocity[m/s] Holy moly! Hence the inner radius of the jar R can be found. Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. 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. 2. Viscosity Lab Report. are off by 2. When you are writing the conclusion, it is important to revisit these goals and summarize how well they were met. All other trademarks and copyrights are the property of their respective owners. References It is a measure of a fluid's resistance to flow. Drop 1 146 0. Bacteria Lab Report. You can also try other liquids. Which liquid do you think the marble will fall fastest in? that the premise and assumption of laminar flow was a somewhat optimistic one, especially so in the case of Solid densities: from about 0. Drop 2 147 0. This will help to ensure that readers understand how the data was collected and can evaluate its reliability. Now, the radius (r) of ball can be calculated as ; r = d/2. The only definitive conclusion we are capable of drawing is that three measurements are not Considering the fact that the Reynold numbers were consistently above one, perhaps we A lab report conveys the aim, methods, results, and conclusions of a scientific experiment. (2) By Experiment We reviewed their content and use your feedback to keep the quality high. 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. Ball bearings of various sizes were then dropped into Fluids with high viscosity act the opposite; they are thick and it is hard for objects to move through them. Motor oil 05%, For result analysis and evaluation we calculated the average Reynolds number for each fluid with the Report 1. Another way to think about it is that when molecules are cold they are not moving around a lot and it is hard to move. Viscosity describes the internal resistance to flow of a fluid (internal friction). Viscosity is a fluids internal resistance to flow under stress. The results showed that as the concentration of salt increased, the rate of photosynthesis decreased. 794 %. assumed to be the same as that of the viscosity. The time taken to travel between two marks on the beaker was recorded. 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 pressure drop across the pipes was recorded to find both the friction factors and Reynolds numbers. Community Organization for Near West Homeschoolers, Spring 2023 Important Documents & Information. 4. Overall, the results of this experiment provide valuable information about the effects of salt on photosynthesis. Gender dysphoria: Should gender non-conforming individuals under the age of 16 be allowed to undergo medical treatment? Liquid densities: from about 0. 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 .
Simu Liu Shoulder Surgery, Jeffrey Epstein Iron Man 2 Cameo,