Question

A major feature in many insulating materials is _____.

a. trapped air
b. thick metal
c. high density

Answer 1

Option (a)

Step-by-step explanation:

There are two types of materials.

1. Conducting materials: The materials which allows the heat or electricity to pass through it are called conducting materials.

For example, iron, copper, silver, etc.

2. Insulating materials: The materials which do not allow the heat or electricity to pass through it are called insulating materials.

For example, rubber, plastic, air, etc.

The air trapped between two layers works as an insulator.