Explain how the liquid in a thermometer changes so that it can be used to measure a temprature .
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the liquid in the thermometer is mercury
it don't work automatically,when the mercury warms,it expand and when it cools,
it contracts
this is how liquid in thermometer changes
it don't work automatically,when the mercury warms,it expand and when it cools,
it contracts
this is how liquid in thermometer changes
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