Question

A one percent expansion of material volume typically requires a temperature increase of the order of _____ of degree celsius?

Answer 1

The effect of pressure and temperature on the densities of liquids and solids is small. The compressibility for a

typical liquid or solid is 10^−6

bar^−1

(1 bar=0.1 MPa) and a typical thermal expansivity is 10^−5 K^−1. This roughly

translates into needing around ten thousand times atmospheric pressure to reduce the volume of a substance by one

percent. (Although the pressures needed may be around a thousand times smaller for sandy soil and some clays.) A

one percent expansion of volume typically requires a temperature increase on the order of thousands of degrees

Celsius.

Answer 2

According to me,

the correct answer so thermal expansion is clearly related to temperature change. The greater the temperature change, the more a bimetallic strip will bend. Second, it depends on the material. In a thermometer, for example, the expansion of alcohol is much greater than the expansion of the glass containing it.