An insulator is used to stop the heat from traveling. Five materials were tested for the ability to insulate: glass, plastic, meatal,paper, and polystrene.
The materials that keep things warm are: Plasitc, paper, and meatal. The materials that keep things cool are:paper cups, polystyrene, and glass. To check the temperature we used an thermometer.
The best sulation for keeping things warm is metal.
LI- To determine the insulative properties of materials.
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