Lubrication facts for kids
Lubrication is a physical process which allows surfaces to move smoothly against each other. A thin film of lubricant put between the surfaces reduces friction and wear on the surfaces, and keeps temperatures from rising too far. The lubricant film can be a solid/liquid dispersion, a liquid, a liquid-liquid dispersion (a grease) or, exceptionally, a solid or gas.
Lubrication Facts for Kids. Kiddle Encyclopedia.