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Energy Transformation- when energy is changed from one form to another

Energy Transformation- when energy is changed from one form to another. Energy comes in many forms:. Thermal/Heat Energy. Energy formed by atoms colliding and moving; anything that creates heat, friction. Rubbing hands together creates friction. Chemical Energy.

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Energy Transformation- when energy is changed from one form to another

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  1. Energy Transformation- when energy is changed from one form to another

  2. Energy comes in many forms:

  3. Thermal/Heat Energy • Energy formed by atoms colliding and moving; anything that creates heat, friction • Rubbing hands together creates friction

  4. Chemical Energy • Created by bonds holding atoms together and breaking apart • Eating, photosynthesis, burning gasoline

  5. Electrical Energy • Energy that flows through a circuit • Anything using electricity, power lines

  6. Mechanical/Kinetic Energy • Energy of motion; anything moving • Walking; a ball bouncing

  7. Potential Energy • Stored energy; anything sitting still; the higher an object is lifted, the more potential energy it has • A parked car, a desk

  8. Nuclear Energy • Energy created when the nucleus of atoms collide

  9. Solar/Radiant Energy • Energy from the sun

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

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

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

  13. Some energy transformations take place in complex chains.

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

  15. 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

  16. 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

  17. 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

  18. THINK ABOUT IT Law of conservation of energy: 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.

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

  20. 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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