How does temperature affect gas pressure in a gas line?

The correct answer highlights a fundamental principle of gas behavior, known as Gay-Lussac's Law, which states that the pressure of a gas is directly proportional to its absolute temperature when the volume of the gas is held constant. In practical terms for gas lines, when the temperature of the gas increases, the kinetic energy of the gas molecules also increases. This heightened activity causes the molecules to collide with the walls of the gas line with greater frequency and force, leading to an increase in pressure.

Understanding this relationship is crucial for professionals working with gas systems, as temperature fluctuations can have significant impacts on system performance and safety. For instance, recognizing that higher temperatures can lead to increased pressure helps in designing systems that can withstand such conditions and in troubleshooting pressure-related issues.

This principle is important in ensuring the safe and efficient operation of gas lines, making it a critical aspect for gas fitters to understand in their work.