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conduction
The type of heat transfer by direct contact is called conduction. Heat is transferred through a solid material or between two objects in direct contact with each other. This occurs as the particles in the material or objects collide and transfer energy to each other.
Energy is mainly transferred in the form of heat. So,transfer of heat energy from one body to another by direct contact is called thermal conduction.
It is heat transfer by radiation.
No, in the universe radiation heat transfer is by far the largest transfer.
Conduction
Radiation
Whether convection is the main type of heat transfer or not depends on the specific situation.
When roasting a marshmallow the transfer of heat from the flame to the marshmallow is radiation.Radiation is the transfer of heat through energy waves. It can actually be considered conduction as well if you place the marshmallow into the flame, since that is the direct transfer of heat.
It is radiation, as that is the only heat transfer that can occur in a vacuum (the universe).
Heat is generally transferred in solids with the conduction mode.In conduction mode,heat is trasferred by lattice vibration.
if you mean the transfer rate of heat ?; the heat transfer rate depends on the atom or molecule type .