What happens when two objects at different temperatures touch

Answer: heat transfer from higher temperature object to lower temperature object

Explanation:

There are three ways of heat transfer.

1) Conduction

2) Convection

3) Radiation

Here we can see two object which has not same temperature. Therefore both objects are in touch with each other. Then you can see the conduction heat transfer. In conduction, heat transfer is occurred due to vibrations of atoms. Here higher temperature object's atoms are vibrating more speed than other one. Therefore heat transfer occurred from higher temperature object to the object in lower temperature