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unit1 thermal energy
the kinetic energy associated with the random motions of the molecules of a material or object. | thermal energy |
the relationship between two systems connected only by a diathermic wall. | thermal equilibrium |
the process of heat or electricity is directly transmitted through a substance when there is a difference of temperature | conduction |
the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity | convection |
the emission of energy as electromagnetic waves or as moving subatomic particles | radiation |
gas to a liquid | condinsation |
gas to solid or liquid | precipitation |
solid to gas (skipping liquid) | sublimation |
solid to liquid | melting |
liquid to gas | evaporation |
liquid to solid | freezing |