Insulator

The video tutorial explains materials that conduct heat or electricity poorly, which are used for insulation. It covers thermal insulation in housing to reduce heat loss and electrical insulation on mains cabling, typically made of plastic or rubber, to prevent short circuits and electric shocks.

What is a characteristic of materials that conduct heat or electricity poorly?

• They provide some measure of protection.

• They are used to increase heat loss.

• They are excellent conductors.

• They are typically made of metal.

What is the primary benefit of thermal insulation in housing?

• It increases the temperature inside the house.

• It helps to reduce heat loss.

• It makes the house more colorful.

• It allows more sunlight to enter.

What materials are typically used for electrical insulation on mains cabling?

• Stone and concrete

• Plastic and rubber

• Wood and paper

• Metal and glass

What is one of the risks that electrical insulation helps to prevent?

• Noise disturbance

• Air pollution

• Short circuits

• Water leakage

Why is it important to use materials that conduct electricity poorly for insulation?

• To reduce the cost of electricity

• To enhance the brightness of lights

• To prevent electric shocks

• To increase the speed of electrical flow