Energy Sources

  • Created by: Iz6379
  • Created on: 31-05-19 10:35
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  • Energy sources
    • Conduction and convection
      • When a particle is heated they gain more energy and start to move
      • EXAMPLE
        • As you pour boiling water into the mug it dissolves the coco powder
        • To make this process quicker you can stir the liquid to make the practices dissolve
        • Thermal energy from       the drink I seeing transferred to the spoon and wooden rod by insulation/surroundings by convection
      • The electrons a piece of metal can leave their atoms and move about in the metal as FREE ELECTRONS
      • Conduction is whenthe process by which heat or electricity is directly transmitted through the material
      • Convection is a method  of heat transfer that happened in gases and liquids
        • This is because the particles are able to move freely and change their positions
    • Diagram of a solid(atoms)
      • The energy transferred by conduction through a material depends on its thermal conductivity
      • The greater the thermal conductivity of a material, the more energy per second it transfers by conduction
      • The atoms are packed tightly together and they vibrate continually
    • LOOK OVER FINDING THE BEST CONDUCTOR BEFORE TEST
    • Infrared Radiation(IR)
      • Radiator,light bulb, fire,gas stove, stove,kettle
      • Bright colours-HIGH IR
      • Dark colours-LOW IR
    • Black body IR
      • An object that absorbs ALL the radiation that falls on it
      • It is the perfect emitter and absorber
      • BEFORE TEST READ THROUGH NOTES

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