Here’s a explanation:
Viscosity
- Viscosity is a measure of a fluid’s resistance to flow.
- High viscosity → fluid flows slowly (e.g., honey).
- Low viscosity → fluid flows easily (e.g., water).
Effect of Temperature
- Liquids:
- Viscosity decreases with increasing temperature.
- Heating makes molecules move faster, reducing intermolecular forces.
- Example: Honey flows more easily when warm.
- Gases:
- Viscosity increases with increasing temperature.
- Higher temperature → faster-moving molecules → more momentum transfer → higher resistance.
Key Idea:
- Liquids → hotter = thinner (less viscous)
- Gases → hotter = thicker (more viscous)
In short: Viscosity is a fluid’s resistance to flow, and temperature changes it differently for liquids and gases.