Thermal Energy Flashcards
Temperature:
Measure of the average kinetic energy of all the particles that make up an object
Thermal Energy:
Sum of the kinetic energy and potential energy of the particles that make up an object
Specific Heat:
Amount of heat needed to raise the temperature of 1 kg of a material 1C
Heat:
Heat energy (or just heat) is a form of energy which transfers among particles in a substance (or system) by means of kinetic energy of those particle. In other words, under kinetic theory, the heat is transfered by particles bouncing into each other.
Conduction:
Energy is transferred by the movement of electrons or ions.
Convection:
The transfer of heat by the circulation or movement of the heated parts of a liquid or gas.
Radiation:
The emission and propagation of energy in the form of rays or waves. The energy radiated or transmitted in the form of rays, waves, or particles. A stream of particles or electromagnetic waves that is emitted by the atoms and molecules of a radioactive substance as a result of nuclear decay.
Thermal Insulator:
A material that insulates, especially a nonconductor of sound,heat or electricity
Solar Collector:
a device in the form of a concave mirror that concentrates and collects the energy of the sun so that it can be stored and used (eg for heating water)
Thermodynamics:
Thermodynamics is a branch of physics concerned with heat and temperature and their relation to energy and work. It defines macroscopic variables, such as internal energy, entropy, and pressure, that partly describe a body of matter or radiation.
1st Law of thermodynamics:
the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes
2nd Law of thermodynamics:
A law stating that mechanical work can be derived from a body only when that body interacts with another at a lower temperature; any spontaneous process results in an increase of entropy
