Advanced Science Primary 4 Energy

A bimetallic strip made of Metal X and Metal Y is heated. Metal X expands more than Metal Y. In which direction will the strip bend?

A Towards Metal Y
B Towards Metal X
C It will contract and get shorter
D It will not bend
Show Worked Solution

Worked Solution

Step 1: Identify that Metal X expands more than Metal Y when heated. Step 2: The longer side (X) must be on the outside of the curve. Step 3: This forces the strip to bend towards the shorter side (Y).

Correct answer: Towards Metal Y

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