Insulation – Odd one out

The video tutorial discusses various materials: polystyrene, steel wool, cotton wool, and straw. It identifies steel wool as the odd one out because it is not a good insulator, unlike polystyrene, cotton wool, and straw, which are effective insulators.

Which of the following materials is not mentioned in the introduction?

• Steel wool

• Polystyrene

• Cotton wool

• Glass wool

Which material is identified as the odd one out?

• Polystyrene

• Steel wool

• Straw

• Cotton wool

What is the main reason steel wool is considered different from the other materials?

• It is heavier

• It is a good conductor

• It is more durable

• It is more expensive

Which of the following materials is a good insulator?

• Steel wool

• Polystyrene

• Aluminum foil

• Copper

Which materials are grouped together as good insulators?

• Polystyrene, cotton wool, and straw

• Polystyrene and steel wool

• Steel wool and straw

• Cotton wool and straw