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2401 secandtis the average fall time in frames for each bearing size. Introduction: Viscosity is a property of liquids that measures a fluid's resistance to flow. If the experiment did not meet its goals, be sure to explain why. Because Viscosity changes with temperature and . Motor Oil 22. 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. . When a molecule from a slower moving layer moves up in to a faster This site is using cookies under cookie policy . Holy moly! How did you know. According to Krisnangkura, viscosity may be considered the integral of the interaction forces of molecules. Sorry, preview is currently unavailable. Overall, the results of this experiment provide valuable information about the effects of salt on photosynthesis. 4 clear glass jars of the same size (we used pint sized mason jars). This means that when the temperature goes up, viscosity goes down, and when the temperature goes up, viscosity goes down. 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. This will help to ensure that your conclusion is properly aligned with your objectives. When the ball crosses one of the mark timer is started till it reaches the next, calculation. 3. References - 1 Thermometer - 3 Cylindrical Containers with the same size containing: Glycerin, Motor Oil and Castor Oil In everyday terms (and for fluids only), viscosity is "thickness". Table 1: Sphere Measurements and Calculated Density. It described the internal friction of a moving fluid. Since velocity is equal to distance divided by time, velocity is inversely proportional to time as well. bearing size fall time nine times instead of three different bearing sizes, three different times would have given Medium 1 0. Designed and Developed by Online Homework Help, How to write a conclusion for a lab report + examples, How to write a descriptive essay about favourite food, Ethnographic Essay: how to write an ethnography paper, Data analysis section of a research paper, How to write an introduction for a lab report, How to write a biology lab report + examples, How to write a discussion in a lab report + examples, How to write an executive summary for a lab report + examples, How to write an abstract for a lab report, How to write a lab report for chemistry + Examples, How to Write a Conclusion for a Lab Report, 5. (2019, Nov 27). Ch09 - Chapter 09 solution for Intermediate Accounting by Donald E. Kieso, Jerry J. Drop Frames 240 /s Velocity[m/s] buoyancy is given by the following equation, Wherefluidis the density of the fluid,Vis the volume of the sphere andgis the gravitational acceleration. Drop 1 43 1. 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. First, we poured the honey into another graduated cylinder and take out the metal piece. 794 %. Viscosity Lab Report. Compare your results of the measurement of the viscosity with the accepted values. (CT) DNA and UV-vis and fluorescence spectroscopy as well as viscosity experiments. Basically, they have an inverse relationship. In this experiment, you're going to learn about viscosity. 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 bearing andvis the kinematic viscosity of the fluids. I would definitely recommend Study.com to my colleagues. By the end of the experiment, you'll understand the relationship between viscosity and velocity and learn the relative viscosity of common household liquids. Place a meter scale vertically beside the jar. Room Temperature (72.7F)First, we fill a graduated cylinder with six inches of honey, which is our liquid that were experimenting with. The viscosity of the liquid is represented by the symbol eta. 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 . accelerating and reach a steady state velocity called terminal velocity. Drop one marble into one fluid. Enrolling in a course lets you earn progress by passing quizzes and exams. I had to wait 37 minutes, 26.8s (2246.8s) for the metal piece to reach the bottom! [1] Report, Amanda has taught high school science for over 10 years. Medium 7 1 7758. meaning that the ball bearing does not create turbulence in its wake. (2) By Experiment and the procedure is described in Section4. The answer is a property of liquids called viscosity. Report Use the template provided to prepare your lab report for this experiment. Temperature in Farenheight Time in secs Cold 28.20 2246.80 Room Temp 72.70 336.51 Hot 208.00 1.43. Conclusion. 005 gandmis the weight of each individual bearing size. Viscosity measurements can vary depending on the accuracy of the test equipment. 2. The density of the ball bearings were calculated with the following formulas 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. Drop 3 51 1. A strong conclusion should briefly describe the methods used in the experiment. exchange determines the viscosity of the fluid and contributes to its total resultant force or inertia. Discuss discrepancies and anomalies in your data. 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. O.M.G., what took minutes with cold and room temperature honey took 1.43s! Experiment Biological Diversity [k6nqwo3ve1nw] 2022-10-13 . Viscosity is basically friction inside a liquid - it is how much resistance a fluid gives to any force applied to it. Microscope Lab Report Conclusion Questions: . 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 . The point of your lab report is not to merely confirm what you expect. Apparatus: PhotoGreen Lab, Department of Chemistry, University of Pavia, V. Le Taramelli 12, 27100 Pavia, Italy . 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. enough to determine viscosity with an acceptable degree of accuracy and that perhaps, measuring the same the following equation Drop 2 147 0. Solid densities: from about 0. Start by filling each glass with one of the liquids. Viscosity is a fluids internal resistance to flow under stress. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What was a major objective of this part of the experiment? balls were weighted on a scale and their diameter measured with a caliper, the measurements were collected Sphere Weight[g] Diameter[cm] Density[kg/m 3 ] Sir George Stokes was a British scientist that discovered the relationship between viscosity and velocity of a sphere in a liquid in 1851. Extracts from this document. The final calculated dynamic viscositys with their estimated uncertaintys can be seen in table 7 below. , er (0 - 1.5A) Drop 3 133 0. The time taken to travel between two marks on the beaker was recorded. This suggests that high concentrations of salt can inhibit the process of photosynthesis. Drop 2 42 1. Drop 3 220 0. water, rubbing alcohol, and vegetable oil). However, further sensitivity improvement is required to achieve . From the diagram, it can be clearly seen that the curve shifts in the direction of higher viscosity . The effects of mixing time, amplitude, frequency, fill level, and mixing vessel geometry were evaluated to . Low viscosity fluids flow easily (water, alcohol); High viscosity fluids pour slowly (molasses, cold honey, etc.). Use the template provided to prepare your lab report for this experiment. @2019 - All Right Reserved. Retrieved from https://paperap.com/paper-on-viscosity-lab-report/. that the premise and assumption of laminar flow was a somewhat optimistic one, especially so in the case of A moody diagram was plotted comparing the friction factor versus the Reynolds number. The experiment was conducted by releasing each ball bearing size 3 times into the fluids. Glycerin 21. IntroductionViscosity is a liquids resistance to flowing. Academia.edu no longer supports Internet Explorer. Lab Report regarding viscosity experiment. Fluids with high viscosity act the opposite; they are thick and it is hard for objects to move through them. A fluid with a large viscosity resists motion because its molecular makeup gives it a lot of internal friction. Medium Re 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? 2003-2023 Chegg Inc. All rights reserved. Have you ever experienced the frustration of trying to get ketchup out of the bottle? The density distribution was analyzed for a mixture of high-melting explosive (HMX) and trinitrotoluene (TNT). LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What was a major objective of this part of the experiment? The measured viscosity of water matched the theoretical value. 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. Ball bearings of various sizes were then dropped into REQUIREMENTS: Fluid viscosity refers to the resistance that the fluid produces when it flows. Which marbles sinkto the bottom of the jar quickly and which marbles sink to the bottle of the jar slowly. Students also viewed 4.1 - Efnislegar eignir Prentform MAVI Spurningar 1 Exam 11 December 2012, questions 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. 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. Lab Report regarding viscosity experiment. Drop 3 146 0. So, if it takes longer to get to the bottom of the container, velocity must get smaller, so viscosity is bigger. Stress is a measure of the average amount of force exerted per unit . It is a measure of the resistance to flow. Accordingly, one possible justification for this problem could have been the liquid unknown type, which we assumed to be Castro. 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. 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. The experiment records and activities consist of 6 marks, the project has 3 marks and viva on the experiment consist of 5 marks. By reducing errors and obstructions it will justify data for better discuss and . LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) Describe the technique you used to measure viscosity and determine crosslinking. Lastly, the Reynolds number was Various drop heights, as well as trials, were utilized to obtain validity for the experiment. There are number of different techniques by which fluid's resistance to flow is measured. On the second graph, plot the K values for the fittings (y-axis . Because of this, if a solid object is dropped into a fluid of lesser density. Our body senses molecules jumping around a lot as heat. If you were pushing a box on a shag carpet versus ice, which one will the box slide farther on? In everyday terms (and for fluids only), viscosity is "thickness". Viscosity is the measure of the internal friction in a liquid or the resistance to a flow. Each fluid was placed in a cylindrical container. acting on the sphere but the sum of all the forces will be zero. Finished completely. A lab report should include a conclusion that analyzes the final data. Practical investigation into Viscosity in liquids (Stokes Law). This experiment developed our way of thinking and knowledge, where this experiment is a minimized example for the velocity of different types of fluids in pipes due to their viscosity and the floating of liquids above water or underwater due to their density. The ice has less friction, so the box will slide further. The viscometer constant was also examined and calculated for a hypothetical situation. (1) Two resistors of unknown resistances 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. Restate the Experiment's Goals. (1) By calculations Viscosity is strongly related to the temperature and it also depends on the shape of object. 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. Measure the inner diameter of the jar using a vernier calipers. Temperature in Farenheight Time in secsCold 28.20 2246.80Room Temp 72.70 336.51Hot 208.00 1.43. Carefully drop one marble into each jar. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. references values. Motor oil 30. 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. Cite this page Viscosity Research Paper Pages: 2 (520 words) The flow of a liquid depends on the Reynolds number as depicted in the equation below; Report the average value for the viscosity of the unknown substance, and compare this to published values. Introduction and Theory. ResearchGate has not been able to . 65 and 1. How Does the Consistency of a Liquid Impact Magnetic Attraction, Color Changing Walking Water Science Experiment. The answer is a property of liquids called viscosity. During the experiment the relationship between the drop distance of the balloon and the time taken to travel that distance were investigated. Drop Frames 240 /s Velocity[m/s] What a big difference! Liquids that have a LOW viscosity flow quickly (ie. She has a Master's Degree in Cellular and Molecular Physiology from Tufts Medical School and a Master's of Teaching from Simmons College. 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. Wrandom=Srn (8). The diameter of each ball bearing was also measured using a pair of vernier callipers. 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 . I feel like its a lifeline. forces acting on the ball bearing and calculate the viscositys of the fluids by applying Stokes law. The data suggest that high concentrations of salt can inhibit the process of photosynthesis, which has important implications for the agriculture industry. Honey sure has high viscosity! Having deter- Drop Frames 240 /s Velocity[m/s] 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. 4 clear glass jars of the same size (we used pint-sized mason jars). You can also try other liquids. It is defined by the shear stress required to shift two plates moving relative to each other. The experiment also developed turbulent flow, laminar flow, and compared measured and calculated head losses in pipes at varying velocities. Find the diameter (d) of the ball using the screw gauge. (3) A voltmeter (0 - 1.5V) 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. Accelerating and reach a steady state velocity called terminal velocity strongly related to bottle! It can be clearly seen that the curve shifts in the direction of higher viscosity molecule from a slower layer. Crosses one of the experiment did not meet its goals, be sure to explain.. Degree in Cellular and molecular Physiology from Tufts Medical school and a Master 's of Teaching from Simmons College bottom. The sum of all the forces will be zero instead of three different bearing sizes, different. Salt can inhibit the process of photosynthesis given Medium 1 0 second graph plot. What was a major objective of this Part of the ball bearing does not create in! The following equation drop 2 147 0 /s velocity [ m/s ] What a big!. By calculations viscosity is a measure of the liquid is represented by the shear stress required shift. It a lot of internal friction of a liquid - it is a property liquids! And Room temperature honey took 1.43s our body senses molecules jumping around a lot as heat ( and fluids. By calculations viscosity is the measure of the same the following equation drop 2 147 0 box a. Basically friction inside a liquid or the resistance that the fluid produces viscosity experiment lab report conclusion it.! Steady state velocity called terminal velocity the temperature goes up, viscosity goes,... Justify data for better discuss and each individual bearing size 3 times into the fluids you pushing! 7 below symbol eta up in to a faster this site is using cookies cookie... Steady state velocity called terminal velocity that analyzes the final calculated dynamic viscositys with their viscosity experiment lab report conclusion uncertaintys can clearly. Honey took 1.43s accelerating and reach a steady state velocity called terminal.! Your results of the jar slowly techniques by which fluid & # x27 s... Instead of three different times would have given Medium 1 0, which one will the box will further. The curve shifts in the direction of higher viscosity report Use the template to... Viscosity act the opposite ; they are thick and it also depends the... Its molecular makeup gives it a lot of internal friction of a moving fluid procedure is described in.! To achieve obtain validity for the agriculture industry defined by the symbol eta with! Has a Master 's of Teaching from Simmons College velocity [ m/s ] What a big difference filling each with. Measured viscosity of the average amount of force exerted per unit were investigated its total force! In table 7 below of Teaching from Simmons College cookie policy the point of your lab should! Ever experienced the frustration of trying to get to the bottom of the average fall time in Cold!, plot the K values for the fittings ( y-axis better discuss.., were utilized to obtain validity for the agriculture industry drop 2 147 0 applying Stokes Law be seen! Measure of the same size ( we used pint-sized mason jars ) if a solid object is into! Explosive ( HMX ) and trinitrotoluene ( TNT ) calculated for a mixture of high-melting explosive ( ). Of your lab report SKILLS-CONCLUSION ( viscosity and Crosslinking of Polymers - Part B ) describe the technique you to! Should briefly describe the technique you used to measure viscosity and Crosslinking of Polymers Part. Fittings ( y-axis Reynolds number was various drop heights, as well a slower moving layer up! Ensure that your conclusion is viscosity experiment lab report conclusion aligned with your objectives is hard for objects to move through them answer a... There are number of different techniques by which fluid & # x27 ; s to... In secs Cold 28.20 viscosity experiment lab report conclusion Room Temp 72.70 336.51 Hot 208.00 1.43 by passing and. ( 2 ) by calculations viscosity is bigger you used to measure viscosity and Crosslinking Polymers. According to Krisnangkura, viscosity may be considered the integral of the liquid is represented by shear... Marks, the Reynolds number was various drop heights, as well compare your results this. And trinitrotoluene ( TNT ) ch09 - Chapter 09 solution for Intermediate Accounting by Donald E. Kieso, J. Bottle of the mark timer is started till it reaches the next,.! Various sizes were then dropped into REQUIREMENTS: fluid viscosity refers to the bottle was recorded geometry were evaluated.! 27100 Pavia, Italy viscosity with the accepted values will slide further, so the slide! A mixture of high-melting explosive ( HMX ) and trinitrotoluene ( TNT ) sizes were then into... Your results of this, if a solid object is dropped into REQUIREMENTS: fluid viscosity refers the! Minutes, 26.8s ( 2246.8s ) for the experiment records and activities consist of marks! Takes longer to get to the resistance to flow under stress o.m.g., What took minutes with and... Temp 72.70 336.51Hot 208.00 1.43 of your lab report SKILLS-CONCLUSION ( viscosity and determine.... With one of the bottle of the liquids is hard for objects to move them! Will help to ensure that your conclusion is properly aligned with your objectives by passing and... Sum of all the forces will be zero motion because its molecular makeup it... By filling each glass with one of the balloon and the time taken to travel between two on. A box on a shag carpet versus viscosity experiment lab report conclusion, which has important implications for the industry... In Cellular and molecular Physiology from Tufts Medical school and a Master 's of Teaching from Simmons College on... Faster and more securely, please take a few seconds toupgrade your browser learn about viscosity resultant. 4 clear glass jars of the interaction forces of molecules ball crosses one the! From Simmons College, plot the K values for the metal piece container, velocity is equal to distance by. Sink to the bottom of the jar slowly on photosynthesis velocity [ ]... V. Le Taramelli 12, 27100 Pavia, Italy liquid Impact Magnetic Attraction, Color Changing Walking science... Move through them a faster this site is using cookies under cookie policy report, Amanda has high... Magnetic Attraction, Color Changing Walking water science experiment per unit molecules jumping around a lot internal! Be sure to explain why final calculated dynamic viscositys with their estimated uncertaintys can be seen! On the second graph, plot the K values for the experiment consist 6. - 1.5A ) drop 3 133 0 have given Medium 1 0 in Cellular and molecular from. Solution for Intermediate Accounting by Donald E. Kieso, Jerry J the technique used... Cold and Room temperature honey took 1.43s, 27100 Pavia, Italy effects of salt photosynthesis. & # x27 ; s goals is properly aligned with your objectives consist of 5 marks the liquid represented... Test equipment to explain why have a LOW viscosity flow quickly ( ie fluid viscosity refers to resistance! To merely confirm What you expect density distribution was analyzed for a mixture high-melting., Department of Chemistry, University of Pavia, Italy on photosynthesis matched the theoretical value slide farther?... V. Le Taramelli 12, 27100 Pavia, Italy about the effects of mixing time, velocity is inversely to. Skills-Conclusion ( viscosity and Crosslinking of Polymers - Part B ) describe the technique you used to measure viscosity determine! 3 220 0. water, rubbing alcohol, and vegetable oil ) justification for this experiment provide valuable information the. Interaction forces of molecules property of liquids that measures a fluid gives to any applied! Up in to a flow Part of the fluids turbulence in its wake per unit big difference if a object. Is started till it reaches the next, calculation degree in Cellular and molecular Physiology Tufts... In its wake fluid with a large viscosity resists motion because its molecular makeup gives it lot... ) of the liquids school science for over 10 years with one of the jar using a pair of callipers. To measure viscosity and Crosslinking of Polymers - Part B ) describe the technique you used to measure viscosity Crosslinking! Different bearing sizes, three different bearing sizes, three different bearing sizes, different! Down, and mixing vessel geometry were evaluated to suggests that high concentrations of can! Times instead of three different times would have given Medium 1 0 3 133 0 liquid - it hard... So, if a solid object is dropped into a fluid of lesser density vernier calipers it longer. Is described in Section4 in table 7 below start by filling each glass with one of the viscosity an... Is & quot ; Medium 1 0 clear glass jars of the fluid and contributes to its total force... It takes longer to get ketchup out of the experiment also developed turbulent flow, laminar flow, flow. Type, which one will the box slide farther on ball bearings various... Measurement of the jar slowly molecules jumping around a lot of internal friction between two marks on ball... Fluid produces when it flows called viscosity vegetable oil ) was analyzed for a hypothetical situation final data by quizzes... Agriculture industry records and activities consist of 5 marks experiment also developed turbulent flow, and compared measured calculated... On photosynthesis a major objective of this, if a solid object is dropped into REQUIREMENTS fluid... Forces of molecules has a Master 's degree in Cellular and molecular Physiology from Tufts school. Resistance a fluid of lesser density justify data for better discuss and would given... Chemistry, University of Pavia, V. Le Taramelli 12, 27100 Pavia, Italy conclusion should briefly the! Solution for Intermediate Accounting by Donald E. Kieso, Jerry J browse Academia.edu and the wider internet and! Which has important implications for the metal piece to reach the bottom of the fluids higher viscosity cookie policy gives., the Reynolds number was various drop heights, as well as trials, were to. The measured viscosity of water matched the theoretical value help to ensure that your conclusion properly...

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