Multiple choice Why two thin shirts can keep us warmer than a single thick shirt in winter? Two thin shirts become thicker so prevent transmission of heat Air layer between two shirts works as good conductor Air layer between two shirts behaves like insulating media No radiation of heat takes place Reveal answer Fill a bubble to check yourself C Correct answer Explanation Air is a poor conductor of heat. By wearing two thin shirts, a layer of air is trapped between them, which acts as an insulator, preventing body heat from escaping to the environment.