energy transffers

• 1. Mechanical work – a force is applied to move an object, for example when a person lifts a book onto a high shelf.

  
• Electrical work – charges flow in the form of electricity, for example in a battery powered toy train

  
• 1. Heat transfer – energy moves from the thermal store of a hotter object to the thermal store of a cooler object, for example when a handwarmer is used to warm up your hands.

  
• 1. Radiation - when energy is transferred as a wave, for example a grill cooking food using infra-red radiation.