I'm not sure I understand your question, but hopefully this answers it...
There are 3 types of heat transfer. Conduction, convection, and radiation. Conduction is the transfer of heat between objects that are in contact. In other words, the molecules from a hot object bounce into the molecules of another object and transfer their kinetic energy. Convection is the transfer of heat in which particles of matter transfer heat to another location. For instance, say you are boiling water. High energy molecules in the water carry their energy to the air molecules jsut above the water's surface. When this heat is transferred the water molecule will then sink to the bottom of the pot generating what we would call a convection current. And lastly radiation...Radiation is transfer of heat that does not require a medium (matter) to travel. This heat is transferred in the form of electromagnetic radiation (basically light of different frequencies). The sun does this everyday. It delivers a solar wind to planet Earth, keeping us warm! :D
Yes. Like the sun, it is material. It gives of heat. Same with radiators and heaters. They give off heat. Good luck, i gave this answer a wild shot so it might not be right. About 85% luck this is the right answer.
Conduction is the transfer of heat through a material.
Thermal Conduction
metal
e.g. copper
You think to thermal conduction.
convection
Convection
Heat
thermal conductivity
Energy transfer by radiation.
convection
radiation
Convection
thermal conductivity
conduction
Conduction
This mode of thrermal energy transfer is called CNVECTION.
Energy transfer by radiation.
heat tranfer dope
convection
convection
radiation
There are three ways to transfer heat energy (thermal energy); convection involves transferring matter, the other two methods (conduction, radiation) don't.
Convection
matter and thermal energy