heat transfer and molecular motion · conduction transfer of thermal energy that occurs in solids,...
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Heat Transfer and Molecular Motion
Energy Vocabulary 2.4
Advanced/Chastain 2017
8P2D Heat Transfer and Molecular Motion
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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.
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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.
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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.
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Conduction
Transfer of thermal energy that occurs in solids, liquids, and gases when two substances of different temperatures touch.
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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
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Insulator
A material or an object that does not easily allow heat, electricity, light, or sound to pass through it.
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Convection
Transfer of thermal energy through
circular motion caused by heating and
cooling in fluids (liquids and gases).
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Convection Current
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Radiation
The transfer of energy through matter or space as electromagnetic waves, such as visible light and infrared waves.
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Atom Collision
The result of two or more atoms striking each other and the release or absorption of energy.
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Thermodynamics
https://app.acceleratelearning.com/scopes/10670/elements/548177