Energy

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Energy

  1. 1. Energy 4-16-08
  2. 2. <ul><li>Define energy & know the unit of measurement </li></ul><ul><li>State the law of conservation of energy </li></ul><ul><li>Define & calculate potential and kinetic energy </li></ul>
  3. 3. Energy <ul><li>the ability to cause change </li></ul>
  4. 4. Types of energy <ul><li>Light </li></ul><ul><li>Thermal </li></ul><ul><li>Chemical </li></ul><ul><li>Electrical </li></ul><ul><li>Magnetic </li></ul><ul><li>Sound </li></ul><ul><li>Nuclear </li></ul><ul><li>Mechanical </li></ul>
  5. 5. Mechanical energy <ul><li>the ability to cause a change in motion </li></ul>
  6. 6. Mechanical Energy <ul><li>There are two types </li></ul><ul><li>Potential energy </li></ul><ul><li>Kinetic energy </li></ul>
  7. 7. Unit of Measurement <ul><li>In order to cause a change in motion we know we need to apply a force in order to change an object’s position. </li></ul>
  8. 8. Newton meter (Nm)
  9. 9. Newton meter <ul><li>can also be called a joule (J) </li></ul>
  10. 10. Kinetic Energy <ul><li>refers to anything in motion </li></ul>
  11. 11. <ul><li>Kinetic energy is dependent on an object’s mass & speed. </li></ul><ul><li>KE = mass x velocity 2 </li></ul><ul><li> 2 </li></ul>
  12. 12. Potential Energy <ul><li>the energy that is stored and has the potential to cause motion. </li></ul><ul><li>PE = weight x height </li></ul>
  13. 13. Conservation of Energy <ul><li>Energy can change from one form to another, but the total amount of energy is always the same. </li></ul>

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