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How does heat travel by conduction?

The hotter a substance is, the more its particles vibrate. If you put one end of a metal rod into a Bunsen burner (don't do this with bare hands!), the other end would become hot because the heat travels down the rod. This happens because the heat from the flame makes the particles in the rod vibrate more.
These vibrations are passed along the rod so the end not
in the Bunsen burner also gets hot.

This is called conduction because the heat is passed
along the rod by one particle bumping into another.

I'm ready to find out which materials are good at conduction