Fluid movement refers to the way liquids and gases flow and change shape. This movement is influenced by factors such as viscosity, temperature, and pressure. For example, water flows easily due to its low viscosity, while honey flows more slowly because it is thicker. In nature, fluid movement can be observed in rivers, oceans, and even in the air as wind. Understanding fluid dynamics helps scientists and engineers design better systems, such as airplanes and pipelines, by predicting how fluids will behave under different conditions.