Jun Jie attached four wax beads to different material rods (A, B, C, D) using the same amount of wax. He heated the other ends of the rods equally. If the bead on Rod C fell off first, what can he conclude about Rod C?
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Worked Solution
Step 1: Heat travels from the heat source along the rod to the wax bead.
Step [2-9]: The faster the heat travels, the sooner the wax melts.
Step [2-9]: Since the bead on Rod C fell off first, heat travelled through it fastest, making it the best conductor.
Correct answer: Rod C is the best conductor of heat.
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