Flip the bottles over to start the display. It is the least viscous material. It is the most viscous. Viscosity is a measure of how much force is required to slide one layer of the fluid over another layer. This activity shows you how to create a colorful density column from common items available from the supermarket.
All materials have characteristic densities.
In this activity you are able to observe the relative densities of household liquids, like syrup, oil, and alcohol, and solids, like lead sinkers, rubber stoppers, and corks. As long as the materials do not react or do not mix, a less dense substance will float on a more dense layer. By adding the solids into the column, you can compare their densities to the densities of liquids by observing the position at which each solid comes to rest. The greater a solid's density, the lower it will sink. Lead sinker Rubber stopper Oak Cork Pine Plastic Procedure 1.