national & global energy resources

• what is a renewable energy resource?

  one that can be replenished as it is used
• examples of renewable energy resources:

  • wind
  • hydro-electricity
  • tidal
  • solar
• examples of non-renewable energy resources:

  • coal
  • oil
  • gas
• uses of energy resources:

  • transport
  • electricity generation
  • heating
• environmental problem when coal is used as an energy resource

  • produces CO2
  • causes global warming
• how do solar panels generate electricity?

  from light
• advantages of solar panels

  • no pollution
  • renewable
  • can be used in remote areas
• disadvantages of solar panels

  • generate electricity on a relatively small scale
  • can't increase power output when there's extra demand
• how do wind turbines work?

  rotating blades turn the generator & produce electricity
• advantages of wind turbines

  • no pollution
• disadvantages of wind turbines

  • noise pollution
  • unreliable
  • not enough wind turbines
  • expensive to build enough turbines to meet demand
• advantages of generating power w gas instead of coal

  • less CO2 released
  • no sulfur dioxide released
• advantages of renewable energy sources

  • doesnt release CO2
  • doesnt contribute to global warming
• advantages of hydro-electric energy sources

  • doesnt destroy habitats
• disadvnantages of nuclear energy sources

  • expensive due to decommission