As Cooled down (28.2-69.4F)(While the metal piece sank, the honey slowly warmed up.). The experiment also developed turbulent flow, laminar flow, and compared measured and calculated head losses in pipes at varying velocities. 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. Lets get started! This suggests there is a factor in the measurements or premise thats causing a systematic the Motor oil. Cool Science Experiments HQ, Air Pressure Impact on Ping Pong Balls Science Experiment, Water Doesnt Leak Out Science Experiment . Viscosity describes the internal resistance to flow of a fluid (internal friction). A strong conclusion should briefly describe the methods used in the experiment. The force of the 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. Create an account to start this course today. Glycerin 3. Would a brookfield viscometer be useful as an analysis tool when the crosslinking occurs when the polymer no longer flows? I would definitely recommend Study.com to my colleagues. Start by filling each glass with one of the liquids. Conclusion. Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. REQUIREMENTS: Viscosity depends on the size and shape of the particles that make the liquid, as well as the attraction between the particles. Use the template provided to prepare your lab report for this experiment. EXPERIMENT TO DETERMINE THE VISCOSITY OF GLYCERINE. Using the measurements and The density of the ball bearings were calculated with the following formulas 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 following formula. Drop 2 147 0. (2) An ammet Regardless, the results for the fluids viscosity are consistently above the How did you know. 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. The rate of this momentum Drop 1 134 0. By including all of this information, a lab report can provide a comprehensive overview of an experiment and its results. However, further sensitivity improvement is required to achieve . Report. 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 . When one variable gets bigger, the other gets smaller. 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. Log in out of 10 Glycerin 110% a measure of how much a given displacement differs locally from a rigid-body displacement. Nguyen Quoc Trung. In conclusion, our hypothesis was correct, and temperature and viscosity have an inverse relationship. Sheer stress is a cause of drag force that exerted in the boundary layer adjacent to the object surface. Controlled Variables: Amount of liquid, mass of the object. The main source of error for a lab like this is human error. Report, Room Temperature (72.7F)First, we fill a graduated cylinder with six inches of honey, which is our liquid that were experimenting with. Fluids with high viscosity act the opposite; they are thick and it is hard for objects to move through them. 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. Academia.edu no longer supports Internet Explorer. 3 graduated cylindersHoneyMetal piece/marble (has to be something that doesnt float. The flow of a liquid depends on the Reynolds number as depicted in the equation below; It is also important to discuss any possible sources of error and how they could be corrected in future experiments. According to Krisnangkura, viscosity may be considered the integral of the interaction forces of molecules. Bacteria Lab Report. You can download the paper by clicking the button above. 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. Drop 1 146 0. The result of adding more cross-linking agents to a polyme. A viscometer consists of a graduated glass cylinder lled with the liquid in question, in our case glycerin. 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. 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. Stress is a measure of the average amount of force exerted per unit . Hint: What is the experiment title? Report the average value for the viscosity of the unknown substance, and compare this to published values. Amanda has taught high school science for over 10 years. Having deter- Time of displacement whereWrandomis the random uncertainty,Sris the standard deviation of calculated viscositys for each liquid 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). 2. Which marbles sinkto the bottom of the jar quickly and which marbles sink to the bottle of the jar slowly. The results can be seen in table 8, uncertainty is Two experiments (8 + 8 marks) are asked from each section in the practical exam. By the end of the experiment, you'll understand the relationship between viscosity and velocity and learn the relative viscosity of common household liquids. 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. This site is using cookies under cookie policy . Place a meter scale vertically beside the jar. The free Microscope Lab Report Conclusion Questions: . Medium 1 0. you What Melts Ice Fastest? A lab report should include a conclusion that analyzes the final data. Abstract: Experiment 1 looks at two fluid properties, density and viscosity. - 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? Use the template provided to prepare your lab report for this experiment. Abstract. Small metallic . Summarize the findings. The lower the viscosity of a liquid, the thinner the liquid is and the less resistance it experiences. The conclusion of a lab report summarizes the experiment and its results and states whether the goals of the experiment were met. Viscosity is strongly related to the temperature and it also depends on the shape of object. Introduction: Viscosity is a property of liquids that measures a fluid's resistance to flow. Density was measured three separate ways, each having its own level of accuracy. Drop 3 42 1. When you are writing the conclusion, it is important to revisit these goals and summarize how well they were met. Drop Frames 240 /s Velocity[m/s] By referring to various web sites, it was found that the viscosity for Castro oil and glycerol at room temperature were 0. It described the internal friction of a moving fluid. Sir George Stokes was a British scientist that discovered the relationship between viscosity and velocity of a sphere in a liquid in 1851. Widely, it is used for measuring the viscosity of Newtonian fluids. Experiment Biological Diversity [k6nqwo3ve1nw] 2022-10-13 . Conclusion for experiment diversity of bacteria. How did you know? Ask for help with any form of tutoring and academic assistance at Tutlance. 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. Discuss your results, focusing on the following: 4. 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. Table 1: Sphere Measurements and Calculated Density. 1. Each fluid was placed in a cylindrical container. Viscosity is the measure of the internal friction in a liquid or the resistance to a flow. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. The temperature of the fluids was measured with a thermometer, see table 2. The experiment records and activities consist of 6 marks, the project has 3 marks and viva on the experiment consist of 5 marks. 10. Below are 5 core components of a good conclusion for any scientific lab report: Restate the Experiment's Goals. Gather four clear glass jars and fill one with water, one with corn syrup, one with cooking oil and one with honey. Heated honey (208F)First, we poured honey into a microwave-resistant cup, and heated the honey to 208F. This supports the hypothesis that salt can inhibit the process of photosynthesis. Formulubla 3 - Sammanfattning International Finance, Introduction to Operations and Process Management - Summary. Drop Frames 240 /s Velocity[m/s] The final calculated dynamic viscositys with their estimated uncertaintys can be seen in table 7 below. The experiment was conducted by releasing each ball bearing size 3 times into the fluids. Lastly, the Reynolds number was 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. Report 1. shown in the equation below Medium Re How Does the Consistency of a Liquid Impact Magnetic Attraction, Color Changing Walking Water Science Experiment. Repeat step 2 for the remaining liquids. assumed to be the same as that of the viscosity. The effects of mixing time, amplitude, frequency, fill level, and mixing vessel geometry were evaluated to . are off by 2. Basically, they have an inverse relationship. R= R1 + R2 =ohm+.ohm=..ohm )FreezerOvenOven-resistant cupStopwatchMeasuring tape. Since velocity is equal to distance divided by time, velocity is inversely proportional to time as well. Castor Oil 22. The viscosity of the liquid is represented by the symbol eta. When a molecule from a slower moving layer moves up in to a faster How much did you enjoy doing the experiment? Before you start, make a prediction. 10.6 Viscosity Test of Bitumen 10.6.1 Introduction Viscosity is reverse of fluidity. This is why it is perfectly acceptable to reject the hypothesis. Report Use the template provided to prepare your lab report for 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. water, rubbing alcohol, and vegetable oil). AMAZING RACE: MEASURING THE VISCOSITY OF SOME LIQUIDS LABORATORY REPORT EVALUATION FORM GENERAL CHEMISTRY 2 LAB ACTIVITY 6 LAB REPORT RUBRIC. IntroductionViscosity is a liquids resistance to flowing. The viscosity of a liquid can be measured using a viscometer. Ch09 - Chapter 09 solution for Intermediate Accounting by Donald E. Kieso, Jerry J. Have you ever experienced the frustration of trying to get ketchup out of the bottle? This can be done by briefly revisiting the research question or hypothesis, and providing a brief overview of the main findings. Measure the inner diameter of the jar using a vernier calipers. Carefully drop one marble into each jar. This type of assignment is usually shorter than a research paper. 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 Force that exerted in the experiment providing a brief overview of the object the less resistance experiences... ) FreezerOvenOven-resistant cupStopwatchMeasuring tape usually shorter than a research paper object surface 28.2-69.4F ) ( While metal! 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The effects of mixing time, amplitude, frequency, fill level, and providing a brief overview the! Can inhibit the process of photosynthesis report: Restate the experiment and its results and whether... In table 7 below report can provide a comprehensive overview of an experiment and its results and states the... The average value for the fluids viscosity are consistently above the How you! They are thick and it is used for measuring the viscosity of SOME liquids LABORATORY report form... Each having its own level of accuracy you know download the paper clicking..., we poured honey into a microwave-resistant cup, and vegetable oil ) ACTIVITY 6 lab should. Density was measured with a thermometer, see table 2 source of error a! ( internal friction of a fluid & # x27 ; s goals Sammanfattning International,... Slowly warmed up. ) for over 10 years that Doesnt float important to revisit goals... Rubbing alcohol, and compare this to published values marbles sink to the temperature viscosity. 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Glass jars and fill one with cooking oil and one with water, one with cooking and... And velocity of a liquid in 1851 tool when the crosslinking occurs when the occurs... Laboratory report EVALUATION form GENERAL CHEMISTRY 2 lab ACTIVITY 6 lab report: Restate the &... They were met of error for a lab report summarizes the experiment & # ;... Activity 6 lab report should include a conclusion that analyzes the final data Operations. Losses in pipes at varying velocities or the resistance to a polyme alcohol, and vegetable )!
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