Fluid dynamics is the study of how liquids and gases move. It examines the forces and interactions that affect the flow of these fluids, including factors like speed, pressure, and viscosity. Understanding fluid dynamics is essential in various fields, such as engineering, meteorology, and oceanography. This branch of physics helps explain everyday phenomena, like how airplanes generate lift or how rivers carve landscapes. By analyzing fluid behavior, scientists and engineers can design better systems, from efficient transportation to predicting weather patterns, ultimately improving our understanding of the natural world and technology.