Wood is a poor conductor of heat (as well as other forms of energy) because it is covalently bound as a compound. As a result, it does not have the free electrons that scatter about to conduct different forms of energy like metals and other strong conductors do.Continue Reading
In addition to a lack of free electrons, wood also has lots of air pockets inside it, and it even has some starches and proteins. These three properties make it hold onto heat rather than release it. Wood is quite porous, and the pores tend to soak up the waves of heat as well; this is why it is possible to put a wooden spoon into a pot of boiling water and touch the handle after a few minutes without burning one's hand, but why doing the same thing with a metal spoon leads to red, sore fingers.
In contrast, metals share electrons on the atomic level, and passing electrons allows energy (of which heat is a form) to move much more freely. One final difference involves the surfaces involved. Even sanded wood is rougher than metal, and rougher surfaces transfer less heat, because their edges do not have as much contact with the recipient as smooth surfaces, such as metal.Learn more about Thermodynamics
Wood indoor heaters, commonly referred to as wood stoves, burn wood for energy to create heat, while pellet stoves burn pellets of biomass as an energy source. These heaters function the same as oil or propane boilers without the consumption of fossil fuels.Full Answer >
Some common examples of energy forms include chemical, electrical, mechanical, thermal, radiant and nuclear energy. Energy cannot be made, but it can be harnessed and transformed from one form to another.Full Answer >
Heat, light, sound and electric energy are all forms produced in a lightning strike. The bottoms of clouds typically become negatively charged, while the earth beneath them becomes positively charged. When the potential difference between the two becomes sufficient to break down the electrical resistance of air, lightning strikes occur.Full Answer >
The fastest way to melt an ice cube is to transfer heat energy to the ice as quickly as possible. Heat sources such as hot water, fire and an oven quickly melt ice, as does setting ice out in the sun.Full Answer >