Advanced Science Primary 4 Energy

Four rods of different materials (P, Q, R, S) were used in an experiment to see which is the best conductor of heat. The time taken for a wax ring to melt at the end of each rod is recorded below. Which material is the POOREST conductor of heat?

A Material P (15 seconds)
B Material Q (45 seconds)
C Material R (10 seconds)
D Material S (120 seconds)
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Worked Solution

Step 1: A good conductor transfers heat quickly (short time). Step [2-9]: A poor conductor transfers heat slowly (long time). Step [2-9]: Material S took the longest time (120 seconds), making it the poorest conductor.

Correct answer: Material S (120 seconds)

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