Question

Fiberglass, an insulator, can be found in the wals and roofs of some houses and buildings. Why would an insulator be needed inside of buildings in the winter? It makes the building look pretty B) It keeps the heat inside of the building. C)It keeps the heat outside of the building. D) It keeps the cool air inside of the building. A) A it makes the building look pretty

Answer 1

It keeps the heat inside of the building

Answer 2

Answer:

B) It keeps the heat inside of the building.

Explanation:

An insulator during winter is needed to stop the heat flow from going outside.

A Fiberglass insulation is made of plastic and tiny pieces of glass. Glass is a non conductive heat material that will stop the scape of heat from a building during winter. In winter if one place is warmer than other, for example the inside of a building and the outside respectively,  heat will tend to flow from the warmest place to the coolest place in order to valance the difference in temperature and reach a thermal equilibrium, to prevent this we use insulators.