Standard Science Primary 4 Energy

In cold weather, the telephone wires between poles appear tighter and straighter. This is because the wires __________.

A gained heat and contracted
B gained heat and expanded
C lost heat and expanded
D lost heat and contracted
Show Worked Solution

Worked Solution

Step 1: Cold weather leads to heat loss. Step 2: Materials contract (get shorter) when they lose heat. Step 3: Shortening wires become tight and straight.

Correct answer: lost heat and contracted

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