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The Plan… 28 May 2013

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:

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The Plan… 28 May 2013

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  1. 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: • 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

  2. 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. Oil has a larger viscosity than water, therefore oil has a slower flow rate. See pages 300 - 301 (c) McGraw Hill Ryerson 2007

  3. 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 Temperature effects how easily a liquid pours. See page 302 (c) McGraw Hill Ryerson 2007

  4. 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. The water’s surface tension allows this insect to remain supported. See pages 304 - 305 (c) McGraw Hill Ryerson 2007

  5. Now you have some work to do… You’re on your own, Don’t waste time!! • 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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