Physics

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  • Physics
    • Energy
      • All objects have energy, it can be stored or moved but never lost
        • Its measured in Joules
    • Evaporation and Condensation
      • Evaporation is when a liquid changes to gas at temps below boiling point
        • Evaporation happens because particles have different energies
          • Evaporation is quicker if its warm or liquid has a large surface area
      • Condensation is when gas cools and changes back to liquid
    • Insulation
      • Home insulation
        • Buildings are insulated to stop losing heat.
          • Payback time is the time taken to save the money you have bought for saving measures- Insulation costs / annual saving
  • Bonds
    • Solids have the strongest particle bond and gas the weakest
      • Freezing is when a liquid becomes a solid
  • Conduction and Convection
    • Conduction transfers heat through solids
      • Metal is a good conductor of heat
      • Plastic and cloth dont conduct heat well
    • Convection transfers heat through liquid and gases
  • Biology
    • The carbon Cycle
      • Processes such as respiration and photosynthesis recycle carbon dioxide between the environment
      • Animals, plants and decomposers all interact with each other in the carbon cycle
        • When an animal breaths out carbon is given back to the cycle through respiration

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