Triple L006 Reducing Wasted Energy

Which of the following materials is the best insulator for reducing heat loss in a house?

• Aluminium

• Glass wool

• Copper

• Steel

What is the main reason double glazing is used in windows?

• To make windows heavier

• To reduce heat transfer by conduction

• To allow more sunlight in

• To increase air flow

Which property of metals makes them poor choices for insulating buildings?

• High density

• High thermal conductivity

• Low melting point

• High electrical resistance

What is the main way loft insulation reduces energy loss in a house?

• By reflecting sunlight

• By reducing heat transfer through the roof

• By increasing air circulation

• By absorbing sound

Which method is most effective for reducing heat loss through walls?

• Painting the walls white

• Installing cavity wall insulation

• Using thicker curtains

• Opening windows

Why do metals feel colder than wood at the same temperature?

• Metals have a lower density

• Metals conduct heat away from your skin faster

• Wood is a better conductor

• Metals are always colder

Which of the following is NOT a method of reducing heat loss in a building?

• Draught-proofing doors

• Installing thick carpets

• Leaving windows open in winter

• Using double glazing

What does a low thermal conductivity mean for a material?

• It transfers heat quickly

• It is a good insulator

• It is a good conductor

• It melts easily

Which of the following is a way to conserve energy at home?

• Leaving lights on when not needed

• Using energy-efficient appliances

• Heating empty rooms

• Keeping the fridge door open

Which of these materials would transfer heat the fastest?

• Copper

• Wool

• Plastic

• Air