Week 3 - Properties of Gases and Liquids Explained by the Particle Model

1. Measuring Viscosity Using Flow Rate

Lesson 9: Measuring Viscosity Using Flow Rate

Textbook Readings

ScienceFocus 8
Page 40
or
Science in Action 8
Page 40

Viscosity is a liquids internal resistance or friction that keeps it from flowing.

The amount of time it takes for a fluid to move is called flow rate and it is a way to measure viscosity. Again, it may be useful to think of viscosity as thickness. A thick or viscous fluid will take a longer time to move then a thin (or less viscous) fluid.

Background Information There are many ways to measure viscosity. The following demonstration tests flow rate of various substances.

Exercise 3.1

Experiment Time: Viscosity Lab

(Set up this lab physically if you would like)

(click assignment icon below to get tables for observation and analysis then click on the lab)