What is the relationship between volume and temperature when measured in Kelvin?

The relationship between volume and temperature when measured in Kelvin is directly proportional according to Charles' Law. This law states that for a fixed amount of gas at constant pressure, the volume of the gas is directly proportional to its temperature measured in Kelvin. This means that as the temperature increases, the volume also increases, assuming the pressure remains constant.

This relationship can be expressed mathematically as V/T = constant, indicating that if you double the temperature, the volume will also double if no other conditions (like pressure) change. This principle is fundamental in understanding how gases behave under different thermal conditions. Understanding this concept is crucial in various applications, including weather systems, engine operations, and laboratory experiments involving gases.