👉 Fluids, encompassing liquids and gases, exhibit a wide array of shapes primarily dictated by the forces at play between their constituent molecules and external influences like gravity and surface tension. Liquids, due to cohesive forces, tend to conform to the shape of their container, meaning they take the form that minimizes surface area, such as forming spherical shapes when isolated. Gases, on the other hand, are highly compressible and spread out to fill any container they occupy, resulting in a shape that's largely determined by external pressures and volumes. The fluid's viscosity also plays a role; more viscous fluids resist flow and may form thicker, more defined shapes, while less viscous fluids flow more freely.