Need fuel + input energy (heat to set it alight) + air (oxygen in air to keep it burning)

Need fuel + input energy (heat to set it alight) + air (oxygen in air to keep it burning)

1. Stored energy is transferred

   • Get a useful output energy (eg. heat and light)
     • Output can be used for movement (transport)
     • Electricity (coal)
     • When we eat food, we are able to move and keep our bodies warm
   • This transfer of energy from the sun, to plants and then to animals is called an energy or food chain

2. FUELS = SUBSTANCES THAT BURN

   • ENERGY
     • plants
       • Provide animals with food (fuel)
     • SUN
   • Have different properties
     • Can be divided into liquids, solids and gases
     • Coal, charcoal, wood, gas, crude oil (petrol, paraffin, candle wax, diesel)
     • Start-up heat energy - some fuels catch alight easily, others need a lot of heat energy
     • Some have more stored energy than others
     • Some burn fast, others slowly
     • Some produce more harmful waste products

3. Eg. match (flammable chemicals + friction)