3. Wrap a thin paper strip tightly around an iron rod. Try to burn the paper with candle while rotating the iron rod continuously. Does it burn? Explain your observation.
Answer: The above activity can be carried out as follows:
Aim: To observe if the thin paper strip around the iron rod burns and make the necessary conclusions.
Materials Required: Iron rod, thin paper strip, candle.
Procedure:
(i) Wrap the thin paper strip tightly around the iron rod. (iii) Now try to burn the paper with the candle while rotating the iron rod continuously with your other hand.
Observations: You will observe that the piece of paper will not burn.
Conclusions: The iron rod is a good conductor of heat. The rotation also helps the conduction. Heat is rapidly transferred by conduction by iron rod at the area where it is joined with the paper. Therefore, the paper does get hot enough to burn.
“Wrap a thin paper strip tightly around an iron rod. Try to burn the paper with candle while rotating the iron rod continuously. Does it burn? Explain your observation.” – Solved.
Related Links:
Solution to Extended Learning Problem 1
Solution to Extended Learning Problem 2
Solution to Extended Learning Problem 4
Solution to Extended Learning Problem 5
Solution to Activity 3.1
Solution to Activity 3.2
Solution to Activity 3.3
Solution to Activity 3.4
Solution to Activity 3.5
Solution to Activity 3.6
Solution to Activity 3.7
Solution to Activity 3.8
Solution to Activity 3.9
Solution to Activity 3.10
Solution to Activity 3.11
Solutions to Chapter 3 Heat
