Transferring Heat Energy
This lesson introduces students to the different ways of transferring heat energy.
• To be able to describe transferring of heat.
To be able to explain the different ways of transferring heat.
To be able to describe how the thermos functions.
Conduction is the transfer of heat energy by which moving particles make other particles move. A good example of this is a cup of hot tea that is stirred with a metal spoon. As heat flows from the tea to the immersed part of the spoon, that section of the spoon becomes hot. The atoms begin to vibrate rapidly. The immersed atoms are tightly connected to the neighboring atoms along the handle of the spoon. As a result, these atoms also begin vibrating. Their vibrations cause the molecules in your fingertips to vibrate, which creates the feeling of warmth. Some materials are better conductors than others. For example, if you replace the metal spoon with a wooden spoon, the wooden spoon conducts much less heat.