Every physical process of weather is accompanied by what?

The correct answer highlights the fundamental aspect of physical processes in weather, which is the concept of heat exchange. Every weather phenomenon, whether it's the formation of clouds, precipitation, or the development of winds, involves the transfer of heat. This transfer occurs as energy is absorbed from or released into the surrounding environment during various processes, such as condensation or evaporation.

For instance, when water vapor in the atmosphere cools, it releases latent heat, which can influence surrounding air temperatures and contribute to the development of weather systems. Similarly, when air rises, it expands and cools, leading to heat exchange that plays a crucial role in storm development and circulation patterns.

Understanding this concept is crucial for pilots, as temperature changes can directly impact air density, performance, and overall flight conditions.