Chapter 3 energy resources

• the main ways we use earths energy resources are

  • generating electricity
  • heating
  • transport
• energy currently comes from

  fossil fuels
• examples of fossil fuels

  • coal
  • oil
  • natural gas
• reliable energy 


  resources that are available all the time
• Natural resource


  A part of the earth that people use
• Examples of natural resources


  • Sunlight
  • Wind
  • Water
  • Plants
  • Animals
  • Fossil fuels (coal, oil, natural gas)
• Renewable natural resources


  • Replaced or replenished by nature when they are used
  • Can be used now and by future generations
• Renewable natural resources


  • Sunlight
  • Wind
  • Water
• Non-renewable natural resource


  A resource that is not able to be replenished by nature at the rate in which they are being used
• Non-renewable natural resources


  • Fossil fuels (coal, oil, natural gas)
• Extracting natural gas and petroleum

  1. Drill deep into earth's surface

  2. Sometimes use chemicals to pump fuels from earth
• Extracting fossil fuels


  Can cause land and water pollution when they spill into the environment
• Burning fossil fuels


  Releases air pollution and greenhouse gases into the atmosphere
• Burning fossil fuels


  Causes the earth to warm at a much faster rate (human-induced climate change)
• Earth warming


  Causes melting of polar ice caps and changes to many habitats
• renewable


  will not run out + can be replaced at same rate of use
• non renewable 


  will run out + cannot be replaced at same rate of use
• use of hydrochloric , tidal , wave , wind , geothermal , solar energy and biofuels 


  generatinh electricity
• Renewable energy source


  One that is replaced by natural processes faster than humans can consume the resource
• Renewable resources


  • Solar
  • Hydroelectric
  • Ocean energy
  • Wind energy
  • Geothermal
• Hydroelectric


  The electric current produced from the energy of moving water, basically a dam is built to create a body of water which turns turbines which creates electricity
• Wind energy


  Windmills can convert wind energy into electrical energy as the wind blows it spins a propeller that is connected to an electric generator that produces electricity
• Geothermal energy


  Inside the Earth can be converted into electrical energy by taking the heated Steam from the earth and then use this steam to drive turbines to produce electricity
• solar energy 


  can be used in remote places but expenisve
• tidal energy 


  no fuel costs but expensive
• wave energy 


  low running cost but dependant on weather