energy resources

• What is the primary source of energy for most devices?

  Electricity
• What distinguishes renewable energy resources from non-renewable ones?

  Renewable resources can be replenished as used
• How are trees related to biofuels?

  Trees cut for biofuel are replanted
• What is the water cycle?

  The continuous movement of water on Earth
• What is a non-renewable energy resource?

  One that will eventually run out
• What are the main features of fossil fuels?

  • Energy store: Chemical
  • Type: Non-renewable
  • Uses: Transport, heating, electricity generation
  • Power output: High
  • Environmental impact: Releases CO₂
• What are the main features of nuclear fuels?

  • Energy store: Nuclear
  • Type: Non-renewable
  • Uses: Electricity generation
  • Power output: Very high
  • Environmental impact: Radioactive waste
• What are the main features of biofuels?

  • Energy store: Chemical
  • Type: Renewable
  • Uses: Transport, heating, electricity generation
  • Power output: Medium
  • Environmental impact: Carbon neutral
• What are the main features of wind energy?

  • Energy store: Kinetic
  • Type: Renewable
  • Uses: Electricity generation
  • Power output: Very low
  • Environmental impact: Changes landscape
• What are the main features of hydroelectricity?

  • Energy store: Gravitational potential
  • Type: Renewable
  • Uses: Electricity generation
  • Power output: Medium
  • Environmental impact: Affects local habitats
• What are the main features of geothermal energy?

  • Energy store: Internal (thermal)
  • Type: Renewable
  • Uses: Electricity generation, heating
  • Power output: Medium
  • Environmental impact: Very low
• What are the main features of tidal energy?

  • Energy store: Kinetic
  • Type: Renewable
  • Uses: Electricity generation
  • Power output: Potentially very high
  • Environmental impact: Affects local habitats
• What are the main features of solar energy?

  • Energy store: Nuclear
  • Type: Renewable
  • Uses: Electricity generation, heating
  • Power output: Weather dependent
  • Environmental impact: Very little
• What are the main features of wave energy?

  • Energy store: Kinetic
  • Type: Renewable
  • Uses: Electricity generation
  • Power output: Low
  • Environmental impact: Very low
• How do fossil fuels impact the environment compared to biofuels?

  Fossil fuels release CO₂, biofuels are carbon neutral
• What is the significance of the power output of nuclear fuels?

  It is very high, supporting large-scale electricity generation
• Why might wind energy not be ideal for farming areas?

  It takes up large areas needed for farming
• What is a potential drawback of hydroelectricity?

  It affects local habitats due to flooding
• How does geothermal energy contribute to heating?

  It provides internal thermal energy for heating
• What challenges are associated with harnessing tidal energy?

  It is hard to harness effectively
• How does solar energy availability vary?

  It is dependent on weather and daylight
• What is the environmental impact of wave energy?

  It has very low environmental impact