Question

A student tested a new liquid to decide whether it is suitable for use in a liquid-in-glass thermometer. It is found
that the liquid does not expand uniformly with temperature. What will be the effect of this on the scale of
temperature?​

Answer 1

Answer:

Upon heating, the glass will expand but liquid will not. This will cause the observed reading to be lesser than the actual reading.

Explanation:

A liquid-in-glass thermometer is said to be linear if the liquid expands by the same amount for every degree Celsius rise in temperature. This means that the scale will be marked in degrees of equal size (as below). If the liquid did not expand uniformly, the scale would be non-linear.

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Answer 2

It is a not linear

A student tested a new liquid to decide whether it is suitable for use in a liquid-in-glass thermometer. It is found that the liquid does not expand uniformly with temperature.

• When the liquid expands by the same amount for every degree Celsius increase in temperature, a liquid-in-glass thermometer is said to be linear. This indicates that the scale will be marked in equal-sized degrees (as below). The scale would not be linear if the liquid did not expand in a uniform manner.
• The idea behind mercury thermometers is that liquids expand when they are heated and contract when they are cooled. As a result, the mercury expands and rises up the tube as the temperature rises, then contracts and does the opposite as the temperature falls.
• The idea behind liquid-in-glass thermometers is that materials expand as they heat up. When heated or cooled, a liquid in a glass tube, known as a capillary, expands and shrinks. The temperature that caused each corresponding thermal expansion can then be determined using a calibrated scale.

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