Question

what is thermal expansion​

Answer 1

Explanation:

Thermal expansion is the tendency of matter to change its shape, area, and volume in response to a change in temperature. Temperature is a monotonic function of the average molecular kinetic energy of a substance. When a substance is heated, the kinetic energy of its molecules increases.

Answer 2

Thermal Expansion

• The tendency of materials to change volume in response to climatic changes is referred to as thermal expansion.
• Whenever the material is heated, its particles move faster, resulting in a larger average separation.
• So when the temperature of a thing rises, it expands or becomes larger.
• Among the many commonly observed examples of thermal expansion is the expansion of alcohol in a thermometer.
• Substances expand when heated and compress when cooled, which is now a well-known phenomenon.
• When you heat a body, its proportions change. Based on the body's shape.