Flame behavior refers to how flames develop, spread, and interact with their environment. Factors such as fuel type, temperature, and airflow influence how a flame behaves. For example, a flame fueled by natural gas will have different characteristics compared to one fueled by wood. Flames can exhibit various shapes and colors based on their conditions. A well-ventilated flame may appear blue, indicating complete combustion, while a yellow or orange flame often suggests incomplete combustion due to insufficient oxygen. Understanding flame behavior is crucial for safety in settings like firefighting and industrial processes.