Question

which materials can be used as thermal insulators and why
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Answer 1

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Answer 2

A thermal insulator is something that prevents heat from moving from one place to another. There are 3 main ways that heat can travel: convection, conduction, and radiation. Typically the phrase 'thermal insulator' refers to a material that blocks conduction.

polystyrene foam.

water.

mineral wool.

plastic, etc are the examples of thermal insulators.