Question

copper expands about ______ times more than glass for the same rise in the temperature ​

Answer 1

Copper expands about 400 times more than glass for the same rise in the temperature ​

Answer 2

Temperature scale

The scale of a thermometer is obtained by selecting two temperatures called fixed points; the lower fixed point and the upper fixed point. The lower fixed point is the temperature of pure melting ice. It is taken to be 00C. The upper fixed point is the temperature of steam above pure boiling water at normal atmospheric pressure. It is taken to be 1000C. The temperature of steam is used since impurities do not affect its temperature but will raise the boiling point of water. The range between these two points is then divided into equal divisions.

On the Kelvin (absolute) scale, 00C is at 273 K while 1000C is at 373 K. Hence to convert 0C to K, add 273 to the temperature in 0C.

Activity 6.1