Insulators are materials that limit heats movement.
Insulators are used to stop heat from traveling. Five materials were experimented on for the ability to insulate: glass, plastic, metal, paper, and polystyrene.
The best insulator for keeping things warm was polystyrene because it only lost 8 degrees over time. The worst insulator for keeping in heat was tin, plastic, and paper because they lost 10 degrees over time.
The best insulator for keeping things cold was paper and polystyrene because they only lost 2 degrees over time. The worst insulator for keeping things cold was glass.
The best insulator for both hot and cold was polystyrene.
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