Thermal expansion occurs in solids, liquids, and gases due to heat application. Three types: linear, area, and volume expansion. Coefficient of linear expansion varies with temperature
Most substances expand when heated and contract when cooled. Temperature changes cause dimensions of bodies to change. Three types of expansions occur in solids: linear, area, and volume
Heating causes materials to expand, cooling causes them to shrink. Temperature increase transforms energy into kinetic energy. Higher kinetic energy causes molecules to move further apart