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# Energy

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### Energy

1. 1. <ul><li>Notes: Energy </li></ul><ul><li>CW: 4-3 B </li></ul><ul><li>H: 4-3 </li></ul>
2. 2. Energy 3-13-09
3. 3. <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>
4. 4. Energy <ul><li>the ability to cause change </li></ul>
5. 5. 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>
6. 6. Mechanical energy <ul><li>the ability to cause a change in motion </li></ul>
7. 7. Mechanical Energy <ul><li>There are two types </li></ul><ul><li>Potential energy </li></ul><ul><li>Kinetic energy </li></ul>
8. 8. 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>
9. 9. Newton meter (Nm)
10. 10. Newton meter <ul><li>can also be called a joule (J) </li></ul>
11. 11. Kinetic Energy <ul><li>refers to anything in motion </li></ul>
12. 12. <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>
13. 13. 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>
14. 15. 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>