Question

Answer the following questions
1. What is thermal expansion?
2. What is thermal expansion of solids?
3. What is thermal expansion of liquid?​

Answer 1

Answer:

Thermal expansion is the tendency of matter to change its shape, area, volume, and density in response to a change in temperature, usually not including phase transitions. Temperature is a monotonic function of the average molecular kinetic energy of a substance.

Answer 2

1. thermal expansion, the general increase in the volume of a material as its temperature is increased.
2. When a solid is heated, its atoms vibrate faster about their fixed points. .The relative increase in the size of solids when heated is therefore small.
3. Expansion in liquids. Liquids do not have a definite shape. Expansion of liquids is much greater than that of solids.