What happens when the temperature of an object increases?

The kinetic energy increases as the particles move faster. The potential energy increases as the particles move farther apart. When the temperature of an object increases, the average kinetic energy of its particles increases. Therefore, the thermal energy of an object increases as its temperature increases.

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.