- Conduction-Heat conduction is the transfer of internal energy by microscopic diffusion and collisions of particles or quasi-particles within a body due to a temperature gradient.Heat conduction within a solid is directly analogous to diffusion of particles within a fluid, in the situation where there are no fluid currents.
- Convection- Is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it.
- Radiation- Is a process in which electromagnetic waves travel through a vacuum or through matter-containing media; the existence of a medium to propagate the waves is not required.
- Joules-one joules of work is done when a force of 1 N is exerted over a distance of ! m, as lifting an apple over your head.Because 1 watt times one second equals one joule, 1 kilowatt-hour is 1000 watts times 3600 seconds, or 3.6 megajoules.
- Calories-The small calorie or gram calorie is the approximate amount of energy needed to raise the temperature of one gram of water by one degree Celsius.
- 1st law of thermodynamics-Energy is the ability to bring about change or to do work. Thermodynamics is the study of energy relates changes in internal energy to heat added to a system and the work done by a system.