Physics - OCR Gateway - Foundation Tier - P6

  • Created by: lala2127
  • Created on: 14-06-18 14:02
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  • Physics - P6
    • Everyday Speed
      • Walking
        • 1.4 m/s
      • Running
        • 3 m/s
      • Cycling
        • 5.5 m/s
      • Cars - rural
        • 13 m/s
      • Cars - motorway
        • 31 m/s
      • Trains
        • 55 m/s
      • Breeze
        • 5 m/s
      • Gale
        • 20 m/s
      • Sound in the air
        • 340 m/s
    • Acceleration and Deceleration
      • Acceleration = change in velocity/time taken
      • Deceleration = (final velocity - initial velocity) / time
    • Non-Renewable Energy Sources
      • They will run out
      • Fossil fules
        • Coal
        • Oil
        • Natural gas
      • Non - renewable power stations
        • Heat water to make steam
        • Fossil fuels are burnt
        • Steam causes a turbine to move
        • Turbine is attached to a generator which produces electricity
      • Environmental problems
        • Fossil fuels release CO2
        • CO2 creates global warming and climate change
        • Coal mining makes a mess of the land
        • Nuclear waste is toxic
    • Renewable Energy Sources
      • Bio-fuels
        • Made from plant products and animal waste
        • Bio-fuels can be burnt to produce electricity
      • Wind power
        • Generators inside produce electricity
        • Only work in the wind
      • Solar cells
        • Generate electricity from the sun
        • No pollution
    • Electricity and the National Grid
      • Alternating current (a.c.)
        • Electricity in your home
        • 50 Hz, 230 V
      • Direct current (d.c.)
        • Batteries and cells
        • Direct voltage
      • The national grid
        • Power station to step up transformer to step down transformer to consumers
      • Transformers change the p.d. of an a.c. supply

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