Energy Sources

• What was the primary source of energy for humans throughout most of history?

  Wood
• How has the primary source of energy changed over the past 200 years?

  Shifted from wood to fossil fuels
• What are fossil fuels?

  Coal, oil, and natural gas
• What has increased in the past 50 years regarding energy sources?

  Use of renewable energy resources
• What are some types of renewable energy resources?

  • Solar
  • Wind
  • Hydroelectric
  • Geothermal
  • Biofuels
  • Tidal
• What are the main uses of energy in the UK?

  Transport and domestic uses
• What fuels are primarily used for transport in the UK?

  Petrol and diesel
• What type of fuel traditionally powered trains?

  Coal
• What has replaced coal as the primary power source for most trains?

  Electricity
• What is the main source of energy for heating in households?

  Natural gas
• How is hot water used for heating in homes?

  Pumped into radiators
• What is a non-renewable source of heat that can be burned in fireplaces?

  Coal
• How do solar water heaters work?

  Use the sun's energy to heat water
• What determines whether electricity is renewable or non-renewable?

  How it's made
• What percentage of electricity in the UK comes from fossil fuels?

  Almost 60 percent
• What do non-renewables together make up in the UK's electricity sources?

  Nearly 80 percent
• What is the vast majority of electricity in the UK sourced from?

  Non-renewable resources
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