Energy resources

• what are the 3 types of fossil fuels

  • coal
  • oil
  • gas
• how long does it take for fossil fuels to form


  millions of years
• how is energy produced by using fossil fuels


  by burning them. the steam produced spins a turbine that generates electricity
• what does it mean when an energy source is non-renewable


  it will run out
• are fossil fuels reliable


  yes
• name the different energy sources

  • fossil fuels
  • nuclear energy
  • hydro electricity
  • wave power
  • tidal barrage
  • wind power
  • geothermal energy
  • solar cells
  • biomass
• What are the three main types of fossil fuels?

  Coal, oil, gas
• Why are fossil fuels considered non-renewable resources?

  They are finite resources that take millions of years to form
• What is produced when fossil fuels are burned?

  Energy and steam
• How does steam produced from burning fossil fuels generate electricity?

  It spins a turbine
• What type of energy source is nuclear energy classified as?

  Renewable energy source
• What is a major drawback of nuclear energy?

  It produces nuclear waste
• Which heavy elements are used for nuclear fission?

  Uranium 235 and plutonium 239
• What is a disadvantage of hydroelectricity?

  It can cause flooding in valleys
• How does hydroelectricity generate energy?

  Water spins turbines
• How can the energy produced by hydroelectricity be increased?

  By increasing the volume of water let through
• What is a key characteristic of wave power?

  It uses the up and down motion of waves
• Why is wave power considered not reliable?

  Waves die down when the wind does
• What is a tidal barrage?

  A dam built across river estuaries
• How does a tidal barrage generate energy?

  Water is allowed out through turbines
• What is a disadvantage of wind power?

  It is not very reliable
• What is a negative impact of wind turbines?

  They can be very noisy
• Where is geothermal energy possible?

  Near hotspots
• What is a major drawback of geothermal energy?

  It is very expensive to set up
• How does geothermal energy generate electricity?

  Steam spins a turbine
• What is a benefit of solar cells?

  They are reliable and use sunlight
• What materials are used in biomass energy production?

  Waste materials like landfill rubbish
• Why is biomass considered carbon neutral?

  Plants absorb CO₂ when growing
• What happens to CO₂ when biomass is burned?

  It is released back into the atmosphere
• What are the processes involved in energy generation from fossil fuels?

  1. Fossil fuels are burned.
  2. Energy is produced.
  3. Steam is generated.
  4. Steam spins a turbine.
  5. Electricity is generated.