To demonstrate property of surface tension, a drop of water placed on a glass surface. The shape of drop

The shape of a water droplet on a glass surface is determined by the balance between surface tension, gravity, and adhesion between the water molecules and the glass surface.

For small volumes of water, the droplet tends to form a more spherical shape because surface tension dominates over gravity, pulling the water molecules inward to minimize the surface area and create the shape with the least surface area possible, which is a sphere.

As the volume of water increases, gravity starts to have a greater effect, causing the droplet to spread out more and become flatter, but surface tension still plays a role in maintaining some cohesion and preventing the droplet from completely flattening out.

This phenomenon showcases how surface tension governs the shape of the water droplet and how it changes based on the volume of water present.