Foundations of Physical Science Workshop: Viscosity of Fluids.
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Transcript of Foundations of Physical Science Workshop: Viscosity of Fluids.
![Page 1: Foundations of Physical Science Workshop: Viscosity of Fluids.](https://reader030.fdocuments.in/reader030/viewer/2022033100/56649d935503460f94a7a4be/html5/thumbnails/1.jpg)
Foundations of Physical ScienceWorkshop: Viscosity of Fluids
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Viscosity of FluidsCPO Science
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Key Questions What is viscosity?
How can viscosity be measured?
How does a molecule’s shape and size affect viscosity?
How does an increase in temperature affect viscosity?
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OverviewDefine viscosity
Build a viscometer
Measure viscosity of various liquids
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What is Viscosity?A measure of a material’s
resistance to flow Which substance here has a higher viscosity?
How can it be measured?
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Viscometer Uses timer and
photogates to measure speed of object moving through a liquid
Indicates the liquid’s resistance to flow
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Average Velocity After setting up Viscometer run three
trials using 10 cm for the distance traveled by the marble through the fluid
Use velocity from the three trials to get the average velocity of the marble
Repeat this process for each of the 5 substances
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Which Liquid is LEAST Viscous?
Compare average velocities – What will differences in these values indicate about each substance?
What does a high velocity mean?
What does a low velocity mean?
Rank the fluids from least to most viscous
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What about Viscosity vs.
Density?? Compare the viscosity rankings list with the density ranking list
Is there a relationship?
What do these two terms actually measure?
They seem to be loosely related, but there must be more to the story
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Size and viscosity Which molecule would
be easier to pour from a bottle?
Which would experience more friction?
How does that affect viscosity?