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Tightly wrap a thin paper strip around a metallic rod. Try to burn the paper with a candle while rotating the rod continuously. Does the paper burn? Explain your observations.
Show Answer
The paper does not burn easily, because the metal conducts the heat away.
Key Points
- A metal rod is a good conductor of heat.
- When the candle heats the paper, the heat quickly passes into the metal.
- The metal carries the heat away from the paper.
- So the paper does not get hot enough to catch fire.
- This shows how good conductors move heat away quickly.
The metal conducts heat away, so the wrapped paper does not burn.
