Forces

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  • Energy
    • Efficiency
      • Sankey diagrams
      • Useful energy output / total energy input
    • Heat tranfer
      • Convection
        • Water heating system
        • Hot air rises, cold air falls
      • Conduction
        • Transfer of energy when particles pass vibrations on
      • Radiation
        • Absorbed by matt black, which also emits radiation
    • Work, KE and GPE
      • GPE = mass x gravity x hieght
      • Energy transferred = force x distance
      • KE = 1/2 x mass x speed^2
    • Power
      • Work done / time taken
      • 1 watt = 1 joule of energy transferred per second
    • Thermos flasks and insulation
      • double glazing, carpets, cavity wall insulation...
      • Flasks: vacuum, silvered surface, cap
    • Power stations
      • wind turbines
      • water power
      • Geo-thermal
      • solar heating
      • solar cells
      • fossil fuels
      • Nuclear
    • Energy types
      • Most Kids Hate Learning GCSE Energy Names
        • Magnetic, Kinetic, Heat, Light, Gravitational potential, Chemical, Sound, Elastic, Nuclear

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