1.  Define thermal conduction.    2.  Fill in the gaps in the following paragraph using these words: wood, heated, solids, vibrate,         conductor, neighbouring, insulator.         When a thermal conductor is                , its atoms start to             more. These atoms pass         on their vibration energy to                atoms.         Thermal conduction is the transfer of heat in               .         An example of a poor conductor of heat is                . It is called an                 .         Copper is a good                 of heat.