the plan… 28 may 2013
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The Plan… 28 May 2013. Get ready for a quiz…. Bill Nye – Pressure – Quiz Bill! Bill! Bill! Quiz! Quiz! Quiz! Quiz! Review last night's homework CYU P. 299 & RC P. 296 Section 8.3 Viscosity, Adhesion & Cohesion Worksheet 8.3 We’ll Review Tomorrow Activities: - PowerPoint PPT PresentationTRANSCRIPT
The Plan… 28 May 2013
• Bill Nye – Pressure – Quiz Bill! Bill! Bill! Quiz! Quiz! Quiz! Quiz!
• Review last night's homework CYU P. 299 & RC P. 296
• Section 8.3 Viscosity, Adhesion & Cohesion Worksheet 8.3
We’ll Review Tomorrow
• Activities: Act 8.9 Flowing Fluid Floods City
Do on your own Act 8.10 Floating Paper Clip
Do with a partner, hand in one copy(c) McGraw Hill Ryerson 2007
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Get ready for a quiz….
(c) McGraw Hill Ryerson 2007
8.3 Viscosity, Adhesion, and Cohesion
• Viscosity is the resistance of a fluid to flow.• Some fluids flow more easily than others
because: Particles of different fluids have different shapes. Particles in some fluids are attracted to each other
more strongly.
• The flow rate is the speed at which a fluid flows from one point to another. The slower the
flow rate the greater the viscosity.
See pages 300 - 301
Oil has a larger viscosity than water, therefore oil has a slower flow rate.
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(c) McGraw Hill Ryerson 2007
The Effect of Temperature on Viscosity
Temperature effects the viscosity of materials as follows:
• Liquids Heated viscosity decreases Cooled viscosity increases
• Gases Heated viscosity increases Cooled viscosity decreases
See page 302
Temperature effects how easily a liquid pours.
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(c) McGraw Hill Ryerson 2007
Adhesion and Cohesion
• Adhesion and cohesion affect the flow rate of liquids.
• Adhesion is the attraction of two different objects or fluids to each other.
• Cohesion is the strength with which the particles of an object or fluid attract each other.
• Surface tension is the property of a liquid in which the surface of the liquid acts as a thin skin due to cohesion.
See pages 304 - 305
The water’s surface tension allows this insect to remain supported.
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Now you have some work to do…
• Activities: Act 8.9 Flowing Fluid Floods City P 303
Do on your own Act 8.10 Floating Paper Clip P 305
Do with a partner, hand in one copy Hand back paper clip• I will demonstrate…
• 8.3 Worksheet Due Tomorrow
• Finish your Vocab!!
(c) McGraw Hill Ryerson 2007
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