Section 1- Conduction
If You Hold One End Of An Iron Rod In A Fire, Before Long The Whole Thing Will Be Too Hot To Hold. This Is Because The Heat Has Transferred Through Conduction. Conduction Can Take Place Within Materials And Between Different Materials. Materials That Conduct Heat Well Are Called Conductors. Metals Are Best. Most Common Metals-Silver Is Best, Then Copper, Alluminum, And Iron.
Conduction Explained By The Collision Between Atoms Or Molecules And The Actions Of Losely Bound Electrons. With The Rod The Flame Causes The Molecules To Vibrate More Rapidly. These Vibrate Against Neighbors. This Causes The Whole Rod To Heat.
Materials With Lose Outer Electrons Are Good Conductors Of Heat (And Electricity). Metals Have Losest Electrons.
If You Touch A Piece Of Wood And A Piece Of Metal That Are In The Same Vicinity, The Metal Will Feel Colder Because It Is A Better Conductor Of Heat, But Really They Are The Same Temperature. Wood, Wool, Cork, Straw, Paper and Styrofoam Are Insulators Because They Delay Heat Transfer. A Poor Conductor Is A Good Insulator.
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