explanations (renewable)

• Renewable resources

  • Never run out
  • Do much less damage to the environment
  • Do not provide as much energy
  • Can be unreliable
  • Because they depend on the weather
• How do you generate electricity?

  Boiler ->Turbine ->Generator
• Which energy resources do not require the sun?

  nuclear, geothermal, tidal
• 1. Fuel burns
  2. heats water
  3. Water turns into steam
  4. Steam travels through pipes and makes turbine spin
  5. Turbine turns generator
  6. Magnet inside a coil of wire inside of the generator spins
  7. electricity is generated
• Fossil fuels

  • coal, oil, natural gas
  • fuel burns to produce steam ....
• Biofuels

  • burn to make steam
• Nuclear

  • nuclear fission (splitting of atoms of a nuclear fuel like uranium) releases energy
  • water is used as a coolant and uses the energy to produce steam
• Wave power

  • waves move in an up and down motion
  • directly drive a turbine (forces in air and causes it to spin)
  • k.e is converted to electricity
• Tidal

  1. Tide barrages/dams are built across river estuaries
  2. Tide fills estuary
  3. when water is released, the turbine spins at a controlled speed
  4. sun and moon are the source of energy
• Hydroelectric power

  1. Valley is flooded to form a reservoir behind a dam
  2. water falls and turns turbines
• Geothermal

  1. Cold water is pumped in pipes to hot rocks near the surface.
  2. Water turns to spin turbines
• Solar cells

  directly from sunlight
• Solar panels

  1. Sun's thermal energy warms up water
  2. Black layer behind pipes absorbs the energy
• Wind power

  1. Wind turbines placed in exposed areas.
  2. Each have their own generator