Core Practical 4 – Viscosity of a Liquid


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This practical is an investigation of the viscosity of castor oil (or glycerol) usinf a falling balll method.


Viscosity of Castor Oil (or Glycerol)

Suggested Time

60 minutes

Practical Techniques

  • Use a ruler to record a range of measurements of distance and interpolate between scale markings.
  • Use calipers and micrometers for small distances, using digital or vernier scales.

Student Sheet

Sample Data

Cover Sheet


“This practical gives notoriously inaccurate results and there are so many factor to take into account! However, the instructions are perfectly clear and the students are mathematically stretched in this experiment.”

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