Thermal Energy Flashcards
Thermal Energy
Thermal energy is the energy that is generated and measured by heat.
Temperature
The degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch
Heat Transfer
Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy between physical systems.
Fahrenheit
Scale of heated temperature.
Celsius
Scale of cold temperature.
Kelvin
The SI base unit of thermodynamic temperature, equal in magnitude to the degree Celsius
Conduction
The process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material
Convection
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, which consequently results in transfer of heat
Radiation
The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization
Solid
Firm and stable in shape; not liquid or fluid
Liquid
A substance that flows freely but is of constant volume, having a consistency like that of water or oil.
Gas
A substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape (unlike a solid) and no fixed volume (unlike a liquid).
Conductor
A material or device that conducts or transmits heat, electricity, or sound, especially when regarded in terms of its capacity to do this.
Insulator
A substance which does not readily allow the passage of heat or sound.
Conservation of Energy
State
The total energy of an isolated system remains constant; it is said to be conserved over time
