Viscosity and Surface Tension
Why some fluids flow more easily than others, and why liquid droplets are round.
Viscosity
Viscosity is a fluid's internal resistance to flow — honey is more viscous than water.
Surface Tension
Surface tension is the tendency of a liquid surface to behave like a stretched elastic membrane, minimizing its surface area — this is why small drops of water tend to be spherical.
Lesson 20 of 31