Why is it important to maintain proper water levels in a kettle?

Maintaining proper water levels in a kettle is crucial for preventing overboiling and ensuring efficiency. When the water level is too high, it can lead to excessive boiling, causing spills and potential hazards. Additionally, the efficiency of the heating process can be compromised if the kettle is not filled to the optimal level. This can result in uneven cooking or longer heating times, which can affect food quality and energy consumption. Proper water levels also help in creating a consistent environment for cooking, allowing for the desired outcomes in food preparation.