Conduction - The transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts.
Convection - The transfer of heat by the circulation or movement of the heated parts of a liquid or gas.
Radiation - The process in which energy is emitted as particles or waves.
Joules -The standard unit of work or energy in the International System of Units (SI), equal to the work done by a force of one newton when its point of application moves through a distance of one meter in the direction of the force: equivalent to 10 7 ergs and one watt-second.
Calories - A unit equal to the kilocalorie, used to express the heat output of an organism and the fuel or energy value of food.
1st Law of Thermodynamics - Its another version of Law of Conservation taken from the thermos system.