1.   It could make or break with vibration or thermal expansion as the machine warmed up.

2.   So it is difficult to estimate thermal expansion as a result of surface warming.

3.   Some of the illustrations of shattered pebbles attributed to thermal expansion and contraction are of flint and quartzites.

4.   Thermal expansion of a liquid without change of phase can then be regarded as an increase in free volume.

5.   The occurrence of scrub and forest fires provides another mechanism whereby rocks can be subjected to significant thermal expansion and contraction.

6.   The importance of thermal expansion, the third mechanism of salt weathering, has yet to be fully evaluated.

7.   Its possible significance derives from the observation that the coefficients of thermal expansion of many salts are greater than that of most rocks.