4'3 Viscosity

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4.3 Viscosity
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VISCOSITY

• How thick or thin a substance is
• Increase thickness decrease in flow rate
• ex. Molasses
• (add heat increase flow rate)
• Thin increase in flow rate

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Viscosity

• What causes fluids to flow are various rates?

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Viscosity

• Resistance to Flow
• particles can move around but maybe difficult
• Internal Friction
• particles rub against one another
• ex. Skating on pavement

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Ability to Flow

• Liquids ability to flow depends on ENERGY
• Heat more energy increased flow rate
• when particles are heated they move past each
  other easier

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Factors that affect Viscosity in Gases

• Gases flow faster than liquids and solids
• Particle size (bigger bulkier increase in
  viscosity)
• Temperature (increase energy more collisions
  and increase viscosity)

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Factors that Affect Viscosity in Liquids

• Liquid particles move around with limited
  internal friction
• Particle size (bigger bulkier increase in
  viscosity)
• Increase Temperature (increase energy decrease
  viscosity increased flow rate)