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Heat Transfer and Molecular Motion
Energy Vocabulary 2.4
Advanced/Chastain 2017
8P2D Heat Transfer and Molecular Motion
Thermal energy
The total amount of kinetic energy from the moving particles inside a piece of matter.
The faster the particles move, the warmer the matter can get.
Molecular Motion•All molecules are in constant motion.
•Molecules of a liquid have more freedom of movement than those in a solid.
•Molecules in a gas have the greatest degree of motion.
•Heat, temperature, and the motion of molecules are all related.
Heat transfer
Thermal energy being moved from one object to another via conduction, convection, or radiation.
Important Tip!
Heat always transfers from hot to cold.
Conduction
Transfer of thermal energy that occurs in solids, liquids, and gases when two substances of different temperatures touch.
Conductor
A material or an object that conducts heat, electricity, light, or sound. Electrical conductors contain electric charges (usually electrons) that are relatively free to move through the material.
https://www.factmonster.com/dk/encyclopedia/science/conductors
Insulator
A material or an object that does not easily allow heat, electricity, light, or sound to pass through it.
Convection
Transfer of thermal energy through
circular motion caused by heating and
cooling in fluids (liquids and gases).
Convection Current
Radiation
The transfer of energy through matter or space as electromagnetic waves, such as visible light and infrared waves.
Atom Collision
The result of two or more atoms striking each other and the release or absorption of energy.
Thermodynamics
https://app.acceleratelearning.com/scopes/10670/elements/548177
