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 polystrene.
The best insulator for keeping things warm was polystrene because the average cooling rate was 8. The worst insulator for keeping things warm were: plastic, tin, and paper.
The best insulator for keeping things cool were: paper and polystrene because the average cooling rate was 2. The worst insulator for keeping things cool was glass.
The best insulator for both warm and cool was polystrene because both average cooling rates were the lowest.
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