Chapter 10 - Conduction

Conduction

Conduction is the process of thermal energy transfer without any flow of the material medium.


Liquid
Water at the top of the test tube boils, but the ice at the bottom remains. This shows that water is a poor conductor of heat.



Gas
The match stick does not ignite. This shows that air is a poor conductor of heat.



Solid
The one end of the metal rod is heated, the other end will also get heated up after a while. This shows that metal is a good conductor of heat.

However, not all solids are good conductor of heat.
Examples:

• Wood
• Rubber
• Plastic
• Glass

Short clip(:
http://www.youtube.com/watch?v=77R4arwD8G8