What are other things in the classroom, such as, mats, bulbs and electric switches, made of?
Mats in the classroom are typically made of woven fabric, coir, or plastic fibres.
Bulbs are made of glass for the outer covering with metal filaments inside.
Electric switches are made of plastic, which is an insulating material that does not conduct electricity.
Each material is chosen based on its properties — glass for transparency in bulbs, plastic for safety in switches, and fabric or coir for durability in mats.
Explanation
The chapter on Page 5 discusses different materials and their uses. Electric switches are specifically mentioned as being made of plastic. The chapter encourages students to identify materials of various objects and understand why certain materials are chosen for specific purposes based on their properties.
Solution Steps
Mats are made of woven fabric, coir, or plastic fibres
Bulbs are made of glass for outer covering with metal filaments inside
Electric switches are made of plastic, which is an insulating material
Materials are chosen based on their properties: glass for transparency, plastic for safety, fabric/coir for durability