GCSE Combined Science (AQA)

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Heat in Homes

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Energy Conservation and dissipation of energy

Heat in Homes

2:59 Reducing Energy Losses
Spec 4.1.2.1
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  • Thermal energy inside a house dissipates outside.
  • Homes are kept warm using boilers and radiators, which generate thermal energy.
  • Continuous thermal energy generation is needed due to heat loss from the house.
  • Heat escapes from any surface of the house, including walls, floors, roofs, and windows.
  • Houses with large surface areas dissipate energy faster.
  • Thick and insulated walls reduce heat loss.
  • Insulating materials like brick are preferred over conductors like metal.
  • Modern houses use foam in walls for low thermal conductivity and structural integrity.
  • Double glazed windows have an air gap to reduce thermal conductivity.
  • Air is used as an insulator in double glazed windows.
  • Insulating lofts reduces heat loss through the roof.
  • Carpets insulate floors better than tiles.
  • Insulation can be used under floorboards to retain heat.
  • Understanding these methods is important for exams on reducing heat loss in homes.

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