You've helped them one at a time. The real understanding is how the ideas CONNECT — teach that next.
Touch (conduction — heat moving by direct contact, molecule to molecule) ×Drift (convection — heat carried around by a circulating fluid)
Water at the bottom of a pot heats first, then the whole pot warms as the water circulates. How do Touch and Drift work together?
Touch then says: “Convection carries heat with no need for any contact heating to start it.” — is that right?
The link: contact heats the fluid, then the moving fluid carries the heat around.
Warm it by touch, then let the flow carry it.
Shift (phase change and latent heat — a state changes while the temperature holds steady) ×Hush (insulation and thermal equilibrium — heat flows until temperatures balance, then net flow stops)
A heating curve has flat spots where you add heat but the temperature does not rise. How do Shift and Hush both explain a flat spot?
Shift then says: “If you add heat and the temperature does not rise, something must be wrong with your measurement.” — is that right?
The link: both are cases where energy moves or balances without the temperature changing.
Sometimes heat changes the state, or just balances — and the temperature holds.
Capstone — read one heating curve together
Three ways heat travels. Bring in the cast member for each.
Heat by direct contact. Who?
Who do you bring in?
Heat carried by a circulating fluid. Who?
Who do you bring in?
The flat spot where a state changes. Who?
Who do you bring in?
The synthesis: heat by contact, heat by flow, and the flat spot of a phase change — the whole story of a heating curve.
