The water cycle, also known as the hydrological cycle, is the continuous movement of water on, above, and below the Earth's surface. This cycle involves processes such as evaporation, condensation, precipitation, infiltration, runoff, and groundwater flow. Water is constantly being circulated between the atmosphere, oceans, rivers, lakes, and groundwater reservoirs. Studying the water cycle is important for understanding and managing freshwater resources, predicting weather patterns, and addressing issues such as droughts, floods, and water pollution. Researchers in this area use a variety of tools and techniques, including remote sensing, computer modeling, and field observations, to study the dynamics of the water cycle and its interactions with the environment.