Insulators are used to stop heat from moving place to place. Five materials were tested for the ability to insulate: glass, plastic, metal, paper and polystyrene.
The best insulate for keeping things warm was polystyrene. The worst insulate for keeping things warm was plastic,tin and paper.
The best insulator for keeping things cold was paper. The worst one was glass.
The best for insulator for hot and cold were polystyrene and paper.
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