4. Give two examples from daily life experiences where expansion and contraction of metal are utilized.
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give two examples from daily life experiences where expansion and contraction of metal are utilized
1 The jammed metal lid of a jam jar can be expanded and opened by heating.
2 In many thermometers, mercury is used.
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give two examples from daily life experiences where expansion and contraction of metal are utilized
The jammed metal lid of a jam jar can be expanded and opened by heating.
In many thermometers, mercury is used.
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