Conduction is the transfer of thermal energy without any flow of the medium. Substances are made of tiny particles called atoms or groups of atoms called molecules. When a solid is heated the molecules begin to vibrate vigorously and bump into neighbouring molecules,...
Convection is the transfer of heat energy by means of a fluid (liquid or gas) through bulk movement of the fluid itself. When a fluid is heated it expands (particles take more space due to increased movement) which makes it less dense, so the hot fluid rises passes...
Radiation is the continual emission of infrared waves from the surface of all bodies, transmitted through space, without the aid of a material medium. Infrared radiation is absorbed by all objects and surfaces which experience a temperature rise. Infrared radiation is...
There are three main ways heat can be transferred into homes: Radiation: heat that travels from a heat source to warm a surface, e.g. sun radiation shining through a window heating the floor and furniture. Conduction: heat transferred through solid objects, e.g. heat...