energy resources

• Non-renewable energy sources

  • Fossil fuels
  • Nuclear fuels
• Fossil fuels

  • Coal
  • Oil
  • Natural gas
• what are renewable energy sources

  Infinite fuels that do little to no damage to the environment but are unreliable
• Renewable energy sources

  • Solar
  • Wind
  • Water waves
  • Hydro-electricity
  • Bio-fuel
  • Tidal
  • Geothermal
• what are non-renewable energy resources used for

  petrol and diesel vehicles, steam trains
• what are renewable energy resources used for

  vehicles with bio-fuels
• How wind power works

  Wind turbines in exposed places have a generator inside them which produce electricity by the spinning blades
• Wind turbines

  • Pros: no pollution, minimal running costs, no permanent damage to landscape

  Cons: eyesaw, noisy, unreliable(wind can stop or be too strong), expensive at start, cant increase output when extra demand
• Solar cells

  • Pros: can be used in remote places, no pollution, reliable in sunny countries, low running costs

  Cons: only works at day, cant increase output when extra demand, high instillation costs
• How geothermal energy works

  Hot rocks in volcanic areas near the surface release heat because of slow decay of radioactive elements
• Geothermal energy

  • Pros: reliable, little damage to environment

  Cons: high costs, impractical locations
• How hydro-electric power works

  Transfers kinetic energy of falling water into electrical energy
• Hydro-electric power

  • Pros: immediate response to extra demand, reliable, no fuel costs, minimal running costs

  Cons: loss of habitat, eyesaw, energy had to travel far, high initial costs
• How wave power works

  Turbines turn kinetic energy of waves into electrical energy
• Wave power

  • Pros: no pollution, no fuel, minimal running costs

  Cons: hazzards to boats, disturbs seabed, destroys habitat, eyesaw, high intitial costs, only good on small scale
• How tidal energy works

  Tide(created by moons gravity) is harnesed by allowing water through turbines at a controlled speed
• Tidal energy

  • Pros: no pollution, no fuel, minimal running costs, reliable

  .Cons: destroys habitat, prevents access from boats, eyesaw, high initial costs
• what are bio-fuels

  Renewable energy sources made from plants and faeces, burnt to produce energy
• Bio-fuels

  • Pros: carbon neutral

  .Cons: high cost for refinement, loss of habitat, greenhouse gasses emitted
• Using renewable energy is hard due to reliability, money, and politics