P2 Energy transfer by heating...

View mindmap
  • Energy transfer by heating...
    • Energy transfer by conduction
      • Metals are the best conductors of energy
      • Non-metal materials such as wool are fiberglass and are the best insulators.
      • The higher the thermal conductivity of a material, the higher the rate of energy transfer through it
      • The thicker a layer of insulating material, the lower the rate of energy transfer through it.
    • Infrared radiation
      • All objects emit and absorb infarared radiation.
      • The hotter an object is, the more infrared radiation it emits in a given time.
      • Blackbody radiation is radiation emitted by a body that absorbs all the radiation incident on it
    • Specific heat capacity
      • Physics- Third Edition Page 32 Key Points
    • Heating and insulating buildings
      • Electric and/or gas heaters and gas or oil-fired central heating or solid-fuel stoves are used to heat houses.
      • The rate of energy transfer from houses can be reduced using:
        • - Loft insulation
          • - Cavity wall insulation
            • - Double-glazed windows
              • - Aluminium foil behind radiators
                • - External walls with thicker bricks and lower thermal conductivity
      • Cavity wall insulation is insulation material that is used to fill the cavity between the two brick layers of an external house wall


No comments have yet been made

Similar Physics resources:

See all Physics resources »See all P2- Energy transfer by heating resources »