Some experiments that test the viscosity of liquids are the marble race experiment and the liquid race experiment for the marble race experiment, you need a tall graduated cylinder, a marble, a stopwatch and the various liquids to test. Transcript of racing marbles to find out viscosity of liquids by: cassy lougheed racing marbles to find viscosity viscosity viscosity is a measure of a fluid's resistance to flow a fluid with large viscosity doesn't want to move. Understand the variables in the viscosity equation density is mass per unit volume of an object and is designated with a pin this equation, you need to measure the density of both the sphere, p s, and the liquid, p l, it is passing through. Viscosity of a liquid can be calculated from the time elapsed, provided that you know the height of the column and the densities of the sphere and the liquid density is a measure of how compact something is.
Viscosity is a properly of liquids that can be very important in very different applications—from how the syrup flows out of your bottle to how blood flows through the human body to how lava. Viscosity of a liquid experiment for this experiment, we are going to test how marbles behave differently based on the type of liquid they are dropped into the experiment is a simple way to explain and measure the viscosity of a liquid. 1 introduction age range the activities in this book provide an opportunity for children to think about the properties of liquids, and in particular, their 'degree of runniness' or viscosity. Viscosity science lab purpose: to determine of changing the viscosity will affect the time it takes for a marble to flow through a liquid hypothesis: if a marble is dropped into dish soap and corn syrup, than i predict that the marble in the dish soap will travel faster than the marble in the corn syrup because i know that the viscosity of the.
On to fluids, we'll give the definition of the coefficient of viscosity for liquids and gases, give some values for different fluids and temperatures, and demonstrate how the microscopic picture can give at least a qualitative understanding of how these values. Viscosity of liquids netherlands: springerpage24 this book is the least effective out of all the sources but it explained in the greatest detail to aim of my experiment which is finding velocity of a liquid. Viscosity is a measurement of a fluid's resistance to change or deformation, or more simply put, how thick it is 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 common metric unit of viscosity is the poise, which is de ned as the force in dynes3 required to move a surface that is one square centimeter in area past a parallel surface at a speed of one centimeter per second, with the surfaces separated by a. If you were going to test a fluid with unknown viscosity, you could use the results of a test with a fluid of known viscosity to find out the unknown viscosity you would have to measure the density of the fluid in a separate task.
Where m is the torque required for the rotational speed, is the liquid viscosity, is the rotational speed of the disc, r is the radius of the disc, and h is the vertical distance from the disc surface to the liquid's free surface. In this week's chemistry-themed family science activity, families explore viscosity, a property of liquids that is a measure of the friction inside the liquid when honey is cold, it may be very slow to flow because its viscosity is high—there is more friction within the liquid that is slowing it down. For the marble race, the marble average speed was 32 seconds for ocean water, 46 seconds for vegetable oil, and 73 seconds for honey for the viscosity experiment, ocean water viscosity was 129 kg/meters squared, vegetable oil was 167 kg/meters squared, and honey was 46,890 kg/meters squared.
The objective is to determine the viscosity of common liquids, honey, ocean water, and vegetable oil, by measuring the time it takes the marble to travel through the liquids methods/materials measure down about 2 cm from the top of each glass with a ruler, and mark it with tape. Oil has a higher viscosity than water and honey has a very high viscosity at room temperature so these fluids tend to flow more slowly than water for a marble to fall through a fluid, the fluid has to change shape to let the marble through. Viscosity of a liquid science experiment video viscosity of liquids science experiment supplies needed 4 clear glass jars of [read more] find this pin and more on physical science by desiree wheeler.
Viscosity is basically friction inside a liquid - it is how much resistance a fluid gives to any force applied to it the greater the viscosity, the slower an object will move through the liquid. Get your stopwatch ready marbles fall at different rates through liquids as the number of oh groups changes this video is part of the flinn scientific best practices for teaching chemistry video. 2 ostwald viscometer 3 viscosity • the resistance of a liquid to flow is called its viscosity • viscosity is a property of liquids that is important in applications ranging from oil flow in engines to blood flow through arteries and veins.
Students calculate the viscosity of various household fluids by measuring the amount of time it takes marble or steel balls to fall given distances through the liquids. Chart i investigated the viscosity's of pure honey vegetable oil hand sanitizer elmer's liquid glue aunt jemima's pancake syrup and glycerin (all at room temperature) and compared them to each other and water (control. Viscosity investigation research question: how does the concentration of c6h12o6 affect the viscosity of a c6h12o6 solution hypothesis i believe that as the c6h12o6 concentration increases, so will the viscosity of the solution. In this investigation, you are going to make your own tool for measuring viscosity, called a viscometer, and use it to compare the viscosities of liquids you find around your home for instance, if your average flow rate for water was 20 seconds and corn oil took 600 seconds (5 minutes) to flow out.