P2: Sustainable Energy

Energy Stores and Transfers
1. Energy is Transferred Between Stores
  1. Thermal
  2. Kinetic
  3. Gravitational Potential
  4. Elastic
  5. Chemical
  6. Nuclear
  7. Electromagnetic
  8. Electrostatic
2. Energy can be Transferred by Heating
  1. Conduction
    1. The vibrating particles transfer energy to close particles.
  2. Convection
    1. The energetic particles move away from hotter to cooler regions.
Conservation of Energy and power
1. Energy can be transferred and stored but NOT created or destroyed
2. Energy Transferred Equation
  1. Energy Transferred (J) = Power (W) x Time (s)
Efficiency and Sankey Diagrams
1. Efficiency Equation
  1. Efficiency = Useful Energy Transferred / Total Energy Transferred
2. Use the Diagram to Show Efficiency
Energy Resources
1. Renewable
  1. Never run out
  2. Most do damage to the environment, but less than non-renewable
  3. Don't provide as much energy
  4. Main resources: wind, sun & tides
2. Non-Renewable
  1. Will run out one day
  2. Reliable
  3. Damages the environment a lot.
  4. Nuclear waste releases radiation, makes it dangerous
  5. Main resources: fossil & nuclear fuels
The National Grid
1. Plugs Contain 3 Wires
  1. Live Wire - Carries the voltage.
  2. Neutral Wire - Completes the circuit - electricity flows in through the live wire and out through the neutral.
  3. Earth Wire - For safety - Carries the current away if something goes wrong.

Resource summary

	Created by Blerta Morina about 5 years ago