Question

What makes a good insulator of heat?

Answer 1

Answer:

Polystyrene and plastic foam are both used as insulators as they have small air bubbles trapped inside them. This makes them very good insulators because heat energy can't flow through them. ... This stops the movement of air in the space between the two layers of glass and reduces heat loss from the window.

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Answer 2

Answer:

Plastic, rubber, wood and ceramics are good insulator of heat.