Which method is used to compare energy state to multiple airfields?

The method used to compare energy states to multiple airfields is associated with understanding how altitude impacts the energy of the aircraft. Higher altitudes generally correlate with increased potential energy due to the aircraft's position relative to the ground. By utilizing the altitude method, pilots can assess the energy available to them for different airfield approaches, particularly regarding how altitude affects glide performance and engine-out scenarios.

In flight training, understanding the relationship between altitude and energy management is crucial for safe landing approaches, as it influences decisions about approach angles and required airspeed. The other methods, while useful in their own contexts, do not specifically focus on the energy state relative to altitude in a way that compares multiple airfields effectively.