Energy

Energy

1. Conservation of energy

   • 2500J Chemical energy
     • kinetic 1000J
     • heat 1000J
     • sound 500J
   • a car
   • NOTHING IS EVER 100% EFFICIENT. OFTEN HEAT IS WASTED ENERGY.
     • Energy can not be created or destroyed, it can only change into other forms.

2. Types of energy

   • Sound energy
   • Electrical energy
   • Light energy
   • Gravitational potential energy
   • Kinetic energy
   • Chemical energy
   • Thermal energy
   • Elastic potential energy

3. Sankey diagram for a lightbulb

   • Energy input 100%
     • Energy output 5%
     • Wasted energy 95%
   • NOT ENERGY EFFICIENT AT ALL