Viscosity

Question 1

What is viscosity?

Answer 1

• the resistance of a fluid to flow
• different fluids have different viscosities
• the viscosity of a fluid can change due to temperature

Question 2

What is a fluid with a high viscosity?

Answer 2

Honey and molasses

Question 3

What is a fluid with a low viscosity?

Answer 3

Water and gasoline

Question 4

How does temperature affect the viscosity of a gas?

Answer 4

• when temperature increases the molecules in gasses bump against each other causing friction
• the greater the friction the higher the viscosity
• the warmer the gas the faster it flows
• the cooler the gas the slower it flows

Question 5

How does temperature affect the viscosity of a liquid?

Answer 5

• when a liquid heats up the particles move faster and spread apart
• father distance between particles means less attraction
• this allows the liquid to flow faster