Convection is a process that occurs when heat is transferred through fluids, like liquids and gases. When a fluid is heated, it becomes less dense and rises, while cooler, denser fluid sinks. This movement creates a cycle, allowing heat to spread throughout the fluid. For example, when you boil water in a pot, the hot water at the bottom rises to the top, while cooler water descends to take its place. This process is essential in many natural phenomena, such as the formation of ocean currents and weather patterns. In the atmosphere, warm air rises, leading to the development of clouds and storms, showcasing the importance of convection in our environment.