1 Experiments showing viscosity

1. Funnels. Pour equal volumes of alcohol and glycerin into two identical funnels. Alcohol flows out faster — alcohol flows more easily than glycerin.
2. Stirring. Stir water and honey with a glass rod. The rod moves more easily in water; after the rod is removed, the motion in water continues for longer, while honey stops almost at once.
3. Falling ball. Drop identical steel balls into two tall cylinders, one with water and one with glycerin. The ball takes longer to reach the bottom in glycerin.

Conclusion.

• Liquids such as water and alcohol have low viscosity: they flow easily and resist the motion of objects through them only slightly.
• Liquids such as honey and glycerin have high viscosity: they flow with difficulty and strongly resist the motion of objects through them.