Four rods of the same length and thickness but made of different materials were placed in a tank of boiling water. A drop of wax was placed at the top of each rod. Which rod will have the wax melt first?
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Worked Solution
Step 1: Heat travels from the boiling water up the rods.
Step 2: Materials that allow heat to flow quickly are good conductors.
Step 3: Metals like copper are better conductors than plastic, wood, or glass.
Correct answer: Copper rod
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