Wax Dots Show Heat Conduction
Wax nearest the warm end melts first, then farther dots.
Teaching & key ideas
What you do: Warm one end and watch wax dots soften in sequence.
What students see: Wax nearest the warm end melts first, then farther dots.
Why it works: Thermal energy moves through the metal by conduction.
Question to ask: How does heat travel through a solid?
Lesson flow
Predict → demonstrate → observe → briefly explain → ask: How does heat travel through a solid?