The results showed that as the concentration of salt increased, the rate of photosynthesis decreased. Drop one marble at a time and observe what happens to the marble when it enters the liquid. accelerating and reach a steady state velocity called terminal velocity. We'll not send The experiment objective in principle was achieved and many new techniques were learned and developed. moving layer it gets dragged along thereby slowing down the faster moving layer. Table 8: Mean Reynold Numbers from final results. Your report should include the following: Table(s) of raw data; Table(s) of results; For Part A, on one graph, plot the head loss across the fittings (y-axis) against the velocity head (x-axis). The force of the Large 0 0. But, when you spill your water, it goes everywhere. Lets get started! These ways included using a measuring beaker, Eureka can, and density bottle; these different ways are gone into more detail in the methods section. Hence the inner radius of the jar R can be found. Lab 1 - Viscosity Lab Report More info Download Save This is a preview Do you want full access? O.M.G., what took minutes with cold and room temperature honey took 1.43s! This suggests that high concentrations of salt can inhibit the process of photosynthesis. The pressure drop across the pipes was recorded to find both the friction factors and Reynolds numbers. Temperature in Farenheight Time in secsCold 28.20 2246.80Room Temp 72.70 336.51Hot 208.00 1.43. She is also certified in secondary special education, biology, and physics in Massachusetts. 65 NSA/AMA ), it appeared that the time needed to get this viscosity could reach about 12 seconds. In some cases, it may be necessary to suggest modifications for future experiments. Drop one marble into one fluid. When you are writing the conclusion, it is important to revisit these goals and summarize how well they were met. Drop 1 146 0. Drop 3 146 0. References Introduction: Viscosity is a property of liquids that measures a fluid's resistance to flow. This lab report will address changes in rheological parameters of fluids measured 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. In everyday terms (and for fluids only), viscosity is "thickness". What Melts Ice Fastest? Time how long it takes for the marble to sink. - 3 Ball Bearings (Small, Medium and Large) Drop 2 53 1. Describe the relationship between viscosity and crosslinking? Which liquid has the highest 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. This site is using cookies under cookie policy . Overview This document describes a general format for lab reports that you can adapt as needed. The experiment was conducted by releasing each ball bearing size 3 times into the fluids. Drop 2 147 0. Microscope Lab Report Conclusion Questions: . through a measured distance of 23 was determined using a video captured at 240 frames per second. 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 . To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. Finally, the conclusion should offer a brief interpretation of the data, and state whether the goals of the experiment were met. Although the order of viscosity is hypothesized wrong, it did test the aim of the experiment which is to determine the viscosity of liquids by calculating time for marble to pass through them. Basically, they have an inverse relationship. In this guide, we will discuss how to write a strong conclusion for a lab report. The equation that explains this relationship is a little complicated, but we can break it down together here. 1. The measured viscosity of water matched the theoretical value. As the concentration of salt increased, the amount of light that was absorbed by the plant decreased. Obviously this is not the case Fi; g. I. under ordinary conditions of measurement, but as a result of experiments by Poiseuille, it is generally assumed that a pressure po may be employed Drop Frames 240 /s Velocity[m/s] For example, honey is more viscous than water. Lab Report regarding viscosity experiment. ResultsHere is a table of the data we collected in this experiment. Glycerin 21. Two experiments (8 + 8 marks) are asked from each section in the practical exam. 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. whereWrandomis the random uncertainty,Sris the standard deviation of calculated viscositys for each liquid 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. can attribute a part of this systematic error to turbulence and the increased drag thereof, especially so in the Each fluid was placed in a cylindrical container. 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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 . Widely, it is used for measuring the viscosity of Newtonian fluids. Castor oil 17% Motor oil 05%, For result analysis and evaluation we calculated the average Reynolds number for each fluid with the you The answer is a property of liquids called viscosity. (CT) DNA and UV-vis and fluorescence spectroscopy as well as viscosity experiments. Castor oil 1. The density of the ball bearings were calculated with the following formulas 5 g/ml to 3-4 g/ml. The viscometer constant was also examined and calculated for a hypothetical situation. the bearing andvis the kinematic viscosity of the fluids. Theory We consider the schematic in Figure1. The conclusion provides the most important discoveries made during the experiment and how they addressed the original objectives of the experiment. Sphere Average Speed[m/s] Standard deviation In conclusion, our hypothesis was correct, and temperature and viscosity have an inverse relationship. 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. The free the following equation From the diagram, it can be clearly seen that the curve shifts in the direction of higher viscosity . Stress is a measure of the average amount of force exerted per unit . are off by 2. Conclusion: 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. 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 . How did you know. Create your account. Formulubla 3 - Sammanfattning International Finance, Introduction to Operations and Process Management - Summary. 0. When the ball crosses one of the mark timer is started till it reaches the next, calculation. 794 %. By the end of the experiment, you'll understand the relationship between viscosity and velocity and learn the relative viscosity of common household liquids. 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 . Temperature in Farenheight Time in secs Cold 28.20 2246.80 Room Temp 72.70 336.51 Hot 208.00 1.43. What was the conclusion of the experiment? error in our results. The DNA cleavage (in dark) and . How did you know? (1) Two resistors of unknown resistances =mV (5), Wheremis the mass andVis the volume of the ball bearings. Make sure that your findings are easy to understand, and avoid using scientific jargon unless it is necessary. Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. 10. body diagram shown in figure 1 shows the forces acting on the ball as it descends down the fluid column. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What was a major objective of this part of the experiment? 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. Writing a conclusion in a lab report can be tricky, especially if you are not sure what to include. Include and Analyze Final Data. Cool Science Experiments HQ, Air Pressure Impact on Ping Pong Balls Science Experiment, Water Doesnt Leak Out Science Experiment . to deformation, can be understood by looking at two layers of the same fluid traveling at different speeds and Its like a teacher waved a magic wand and did the work for me. 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. On the second graph, plot the K values for the fittings (y-axis . assumed to be the same as that of the viscosity. Medium 7 1 7758. 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LAB REPORT HYDRAULIC POLITEKNIK : SEMESTER 4 : PROPERTIES OF FLUID. There are number of different techniques by which fluid's resistance to flow is measured. enough to determine viscosity with an acceptable degree of accuracy and that perhaps, measuring the same The diameter of each ball bearing was also measured using a pair of vernier callipers. 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 . Lastly, the Reynolds number was Same procedure is carried out for othe, Do not sell or share my personal information. Academia.edu no longer supports Internet Explorer. the ball bearing reaches its terminal velocity, the forces acting on the ball will have reached equilibrium, as 3 graduated cylindersHoneyMetal piece/marble (has to be something that doesnt float. 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