SCS - Insulating the Home

What insulation stops heat conducting through a surface of a building?

• Draught excluder
• Cavity wall insulation
• Loft insulation
• Central heating

Which insulation cuts down on convection currents?

• Double Glazing
• Underlay
• Loft insulation
• Draught excluders

Through which part of a house does most heat escape?

• Walls
• Roof
• Doors
• Windows

How do you work out pay back time?

• savings per year / installation cost
• useful energy / time
• installation cost / savings per year
• time / useful energy

What can be utilsed if a lot of heat is found to be leaving a house through the windows?

• Thick curtains
• Cavity wall insulation
• Underlay
• Loft insulation

What value of payback time is advantageous for a home owner looking to improve energy efficiency?

• as large as possible
• as small as possible
• smaller than other available insulations
• larger than other available insulations

What is the efficiency of an appliance that wastes half of the energy it uses?

• 0.5%
• 0.25%
• 100%
• 50%

Calculate the efficiency of a dishwasher that uses 4500J of electrical energy for a wash, converting 2500J into waste forms of energy.

• 55%
• 11.25%
• 44%
• 65%