the transfer of heat by direct contact is called?
Conduction is the transfer of heat by direct contact. If two things are touching each other, then they have direct contact.
All matter is made up of molecules and atoms. These atoms are always in different types of motion (translation, rotational, vibrational). The motion of atoms and molecules creates heat or thermal energy. All matter has this thermal energy. The more motion the atoms or molecules have the more heat or thermal energy they will have. Conduction