The viscosity of liquids decreases with increase in temperature.
What is Viscosity?
Viscosity is defined as the measure of the resistance of a fluid to gradual deformation by shear or tensile stress. To put it another way, viscosity refers to a fluid’s resistance to flow.
- Viscosity is measured in Pascal seconds (Pa s).
- If the speed of the sphere is less, the viscosity will be more.
- The more viscous a fluid is, the more resistance it offers to any object moving inside it.
- Although all liquids have a certain value of viscosity, the for liquids is generally considered as high or low, keeping the viscosity of water as a benchmark.
- When a liquid is heated, the kinetic energy of its molecules increases and the intermolecular attraction becomes weaker. Hence, the viscosity of a liquid decreases with increase in its temperature.
Honey is thicker than water and, as a result, honey is more viscous than water.