Standard Science Primary 4 Energy

Michael had a metal ball that could just pass through a metal ring. After heating the ball for 5 minutes, it could no longer pass through the ring. This is because __________.

A the ball has turned into a liquid
B the ball has gained mass
C the ring has contracted
D the ball has expanded
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Worked Solution

Step 1: Heating a solid causes its particles to vibrate more and take up more space. Step 2: This increase in size is called expansion. Step 3: The ball became too large for the ring. Step 4: Final Answer: The ball has expanded.

Correct answer: the ball has expanded

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