Transformation

• Types of Energy


  • Chemical
  • Thermal (heat)
  • Sound
  • Radiant (light)
  • Mechanical
  • Electrical
• Chemical energy


  • Gasoline; food; fireworks
• Thermal (heat) energy


  • Warmth from the fire/the sun
• Sound energy


  • Voices; music
• Radiant (light) energy


  • Sunlight; microwaves
• Mechanical energy


  • Wind; running water
• Electrical energy


  • Lightning; electricity for your home
• Law of Conservation of Energy


  Energy CANNOT be created nor destroyed ; rather, it can only be transformed or transferred from one form to another
• The Law of Conservation of Energy was first proposed and tested by Émilie du Châtelet in the 1700s
• There are many ways to change or transform one form of energy into another form
• Energy Transformations


  1. Your body & a car's engine change chemical energy into mechanical energy

  2. Banging a drum or pulling a bow across the strings of a violin involves changing mechanical energy into sound energy

  3. A toaster or oven changes electrical energy into thermal energy
• Energy Transformations


  • Solar Panel: Light energy -> electrical energy
  • Fire: Chemical energy -> thermal energy & light energy
  • Wind turbine: Mechanical energy -> electrical energy
  • Car engine: Chemical energy -> thermal energy -> mechanical energy
  • Light bulb: Chemical energy -> thermal energy & light energy