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Kinetic and Potential Energy have many forms

Kinetic and Potential Energy have many forms. Types of Kinetic Motion Thermal Electrical Light Sound. 1. Motion Energy -. Energy associated with movement of any object. 2. Thermal Energy (Heat) -. Total energy of the particles in an object.

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Kinetic and Potential Energy have many forms

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  1. Kinetic and Potential Energy have many forms

  2. Types of KineticMotionThermalElectricalLightSound

  3. 1. Motion Energy - Energy associated with movement of any object

  4. 2. Thermal Energy (Heat) - Total energy of the particles in an object

  5. Example: Heating causes the particles to move faster = more thermal energy

  6. 4. Electrical energy - Energy of moving electrons

  7. Example : electric outlet

  8. 5. Radiant or Electromagnetic (Light) energy Travels in waves

  9. Examples: lightbulb, microwave

  10. 6. Sound energy- Caused by an object’s vibrations

  11. Example : guitar, boombox

  12. 4 types of potential energy 1. Elastic P.E. Gravitation P.E. Chemical P. E. Nuclear.

  13. Gravitational P.E. - Energy of position due to height GPE = mass x gravity x height Gravity = 9.8 m/s 2

  14. Example of Gravitational PE

  15. Elastic P.E - Stored energy in something compressed or stretched.

  16. Example of Elastic PE

  17. Chemical Potential Energy Energy stored in chemical bonds Examples: food, gasoline

  18. 3. Chemical energy - Energy stored in chemical bonds

  19. Examples: wood, food, gasoline, batteries

  20. Calculating Potential Energy PE = (mass)(gravitational field strength)(height) or PE = m g h g = 9.8 N/kg Units: N/m or Joule (J)

  21. 7. Nuclear energy - Potential energy stored in the nucleus of an atom

  22. Example : nuclear power plants, sun

  23. Mechanical Energy Sum of the Kinetic and Potential energy

  24. Examples: most moving objects have mechanical energy

  25. Energy Conversions - A change from one form of energy to another

  26. Conversion example 1 Lamp : electrical energy converts to light energy

  27. Conversion example 2: Water heater : Chemical energy of gas to thermal (heat ) energy

  28. Conversion example 3: Human body : converts chemical energy in food to mechanical energy

  29. Energy is Conserved

  30. Energy is conserved

  31. Energy is Conserved

  32. Pendulum

  33. Law of Conservation of Energy • Energy cannot be created or destroyed • Energy can change from one form to another, but the total amount of energy always remains the same

  34. Conversion of Energy • Energy is neither created nor destroyed, but transformed from one form to another. • A waterfall has both kinetic and potential energy. • The water at the top of the waterfall has stored potential energy. • Once the water leaves the top of the waterfall, the potential energy is changed into kinetic energy.

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