Question

L 2.2.2 Quiz: Heat Flow

Question 6 of 10
A double-paned window has two glass panes separated by a layer of air. Why
is air, rather than glass, used to fill this space?
A. The radiation of heat is increased by the air.
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B. The convection of heat is increased by the air.
C. The convection of heat is slowed by the air.
D. The conduction of heat is slowed by the air.

Answer 1

D. The conduction of heat is slowed by the air.

A double-paned window is designed to reduce the amount of heat that is conducted through the window. Air is a poor conductor of heat, meaning that it does not transfer heat as easily as glass. By using a layer of air between the two panes of glass, the window is able to slow the conduction of heat, making it more energy efficient. This helps to keep the inside of the building warmer in the winter and cooler in the summer, which can help to reduce energy costs.