It is not at all uncommon for flight students to be confused about the topic of altitude. Indicated altitude, pressure altitude, density altitude, absolute altitude, and true altitude all wear the “altitude” banner but mean something different.
Every pilot learns about cold fronts as part of their weather education—but not all cold fronts are alike. Yes, cold fronts are advancing masses of cold air that form a boundary when they encounter warmer air. But it’s the fast-moving ones you have you really have to watch out for.
Navigating Your Way to Cool, Comfortable Flights