Subject Matter

• Charles' Law can be used to predict what will happen to the volume of a fluid when the temperature is changed (at constant pressure). The law predicts that if the temperature of a fluid increases, the volume also increases, in order to maintain the same pressure. Similarly, if the temperature of a fluid decreases, the volume also decreases in order to maintain the same pressure.

Causality

• A relational causal model can be used to understand Charles' Law.
• Considering multiple relationships at various levels within pressure phenomena can be a mentally challenging task, especially when the relationships are dynamic, as is the case with pressure-related phenomena.