Standard Science Primary 4 Energy

Four rods of the same size but different materials (P, Q, R, S) had a drop of wax placed at one end. The other end was heated. The table shows the time taken for the wax to melt. Which material is the BEST conductor of heat?

A S (10 seconds)
B Q (40 seconds)
C R (120 seconds)
D P (15 seconds)
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Worked Solution

Step 1: A good conductor allows heat to travel through it quickly. Step 2: The faster the heat travels, the sooner the wax melts. Step 3: Material S took the shortest time (10s), making it the best conductor.

Correct answer: S (10 seconds)

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