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Energy comes in many forms:

Thermal Light Sound. Chemical Electrical Mechanical. Energy comes in many forms:. When energy is used to make things move, it is transformed from one form into another. Most energy transformations can be traced back to the sun: the original source of energy for life on earth.

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Energy comes in many forms:

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  1. Thermal Light Sound Chemical Electrical Mechanical Energy comes in many forms:

  2. When energy is used to make things move, it is transformed from one form into another.

  3. Most energy transformations can be traced back to the sun: the original source of energy for life on earth.

  4. Simple energy transformation: Sunlight shines on a person's face and changes to thermal energy.

  5. Some energy transformations take place in complex chains.

  6. Old style steam locomotiveIn this old steam engine, steam is used to move pistons which make the wheels turn. Sun Fossil Fuel Thermal Mechanical

  7. Battery – powered alarm clockIn this battery-powered alarm clock, the hands move and an alarm rings when it’s time to wake up. Chemical ElectricalMechanical      Sound

  8. Solar-powered carMost cars run by using a battery for electrical energy and gasoline for chemical energy. A solar powered car can go using energy from the sun. Solar Light ElectricalMechanical

  9. Hand-cranked generatorA generator is the opposite of a motor: Motor: put in electricity and motion comes out. Generator: put in motion and electricity comes out. Chemical      Mechanical     Electrical      Light      Thermal

  10. THINK ABOUT IT Energy cannot be created or destroyed. It can only be transformed from one form to another. Identify all the energy transformations that occur when you operate a hair dryer.

  11. Transformations From source to use Energy source: fossil fuels (coal) Transformations: Chemical (burning) -> Thermal (steam) -> Mechanical (generator) -> Electrical -> Thermal and Mechanical (fan inside)

  12. Conclusion As we each move through our day, we are constantly witnessing and experiencing transformations of energy. • Alarm clock, microwave oven, lights, car • Even the leaves on plants are quietly converting solar energy into chemical energy!

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