energy resources

• renewable energy

  1. Wind
  2.  Solar
  3.  Geothermal
  4.  Water waves
  5.  Biofuels
  6.  Hydroelectricity
  7.  Tidal
• Non renewable

  • fossil fuels - coal, crude oil and natural gas
  • nuclear energy
• renewable energy sources are replenished
• non - renewable energy are not replenished and have a limited supply
• What is one advantage of using fossil fuels?


  They are cheap.
• In what conditions can fossil fuels be used?


  They can be used in any condition.
• What is a disadvantage of burning fossil fuels?


  They produce toxic gases when burnt.
• What is the primary purpose of burning fossil fuels?


  To provide heat.
• What is one of the main uses of fossil fuels in power engineering?


  To generate electricity.
• What is a potential environmental impact of using nuclear energy?


  It produces radioactive waste.
• What is a pro of nuclear reactions compared to fossil fuels?


  Nuclear reactions don't produce carbon dioxide.
• What is a con of using nuclear energy?


  It can be expensive to manage resources.
• What is a disadvantage of nuclear energy related to waste?


  It produces radioactive waste.
• What are the pros and cons of fossil fuels and nuclear energy?


  Pros of fossil fuels:

  • Cheap
  • Usable in any condition
  • Provides heat

  
  

  Cons of fossil fuels:

  • Produces toxic gases when burnt

  
  

  Pros of nuclear energy:

  • Does not produce carbon dioxide

  
  

  Cons of nuclear energy:

  • Expensive resource management
  • Produces radioactive waste
• What is the main function of wind turbines?


  To convert wind energy into electrical energy
• How do wind turbines generate electricity?


  The blades spin in the wind, turning a generator inside the turbine
• What happens to the energy generated by wind turbines?


  It is transported to the national grid
• What are the pros and cons of wind and solar energy?


  Pros:

  • Low running cost
  • Cheaper every year
  • Don't damage the environment

  
  

  Cons:

  • High upfront cost
  • Dependence on weather
  • Produce pollutants
• What is a disadvantage of wind energy?


  It depends on weather conditions
• What is a benefit of solar energy?


  It is becoming cheaper every year
• What type of energy do solar panels directly convert?


  Sunlight into electrical energy
• How do wind turbines affect the environment?


  They don't damage the environment
• What is a common issue with both wind and solar energy?


  They both have high upfront costs
• What is a key characteristic of wind energy generation?


  It relies on moving air to generate power
• What is one of the pollutants associated with energy generation?

  Pollutants generated by fossil fuels
• Why is wind energy considered renewable?


  Because it is generated from natural wind currents
• What is the role of the generator in a wind turbine?


  To convert mechanical energy from the spinning blades into electrical energy
• What is the significance of the term "exposed areas" in relation to wind turbines?


  Wind turbines are placed in exposed areas to maximize wind exposure
• How do the costs of wind and solar energy compare over time?


  Both have high upfront costs but low running costs
• What is the impact of technological advancements on solar energy?


  Technological advancements make solar energy cheaper every year
• What is a disadvantage of geothermal energy?


  It doesn't produce energy in certain areas.
• What is a key characteristic of geothermal energy?


  It is a reliable long-term source of power.
• What is a disadvantage of power plants?


  They are expensive to build.
• How is geothermal energy generated?


  It is thermal energy generated/stored in the Earth's crust from radioactive decay.
• How can geothermal energy be used to produce electricity?


  By pumping water down into the ground to get warmer and converting it into steam.
• What is a benefit of using geothermal energy for heating?


  It is cheaper to leave water underground to convert into steam.
• What is biofuel made from?


  Recently living organisms, such as plants and algae.
• What is a characteristic of biofuels regarding CO2 emissions?


  They release CO2 but are considered carbon neutral when mixed with fossil fuels.
• What is hydroelectric power primarily based on?


  Trapping water from upstream to form a reservoir.
• What are the pros and cons of hydroelectric power?


  Pros:

  • Generates electricity from water levels
  • Produces huge amounts of gravitational energy
  • No pollution
  • Reliable source of electricity
  • Low running costs

  
  

  Cons:

  • Initial setup is expensive
  • Can cause flooding in large areas