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Science

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Science

1. 1. Science energy
2. 2. energy <ul><li>Energy is the ability to do work or cause change </li></ul><ul><li>Kinetic energy can be calculated by doing ½*m*v 2 </li></ul><ul><li>Kinetic energy is an energy an object has due to motion. </li></ul><ul><li>An object does not have to be moving to have potential energy. </li></ul><ul><li>You can calculate potential energy by w*m </li></ul>
3. 3. Example Problems <ul><li>What is the kinetic energy of a 1250 kg car traveling at 7 m/s? </li></ul><ul><li>½*1,250*42 </li></ul><ul><li>625*49= 30625 J </li></ul><ul><li>A skier weighs 500N. The ski jump is 13m high. How much gravitational potential does she have? </li></ul><ul><li>500N*40m=20,000J </li></ul>
4. 4. Energy Types <ul><li>Mechanical- a combination of it’s potential and kinetic energy </li></ul><ul><li>Thermal-the total potential and kinetic energy of the particles in an object </li></ul><ul><li>Electrical-the energy of electric charges </li></ul><ul><li>Chemical-chemical compounds are made up of atoms and molecules </li></ul><ul><li>Nuclear-nuclear energy is potential energy that is stored in the nucleus of an atom </li></ul><ul><li>Electromagnetic-electromagnetic energy travels in waves. </li></ul>
5. 5. Name that energy!!! <ul><li>Electrical </li></ul><ul><li>Thermal </li></ul><ul><li>electromagnetic </li></ul><ul><li>Potential </li></ul><ul><li>Chemical </li></ul><ul><li>thermal </li></ul>
6. 6. Name that energy (cont.) <ul><li>Mechanical </li></ul><ul><li>electrical </li></ul><ul><li>Mechanical </li></ul><ul><li>Electrical </li></ul><ul><li>Potential </li></ul><ul><li>electromagnetic </li></ul>
7. 7. Name that energy (cont.) <ul><li>Thermal </li></ul><ul><li>Electromagnetic </li></ul><ul><li>chemical </li></ul><ul><li>Thermal </li></ul><ul><li>Electromagnetic </li></ul><ul><li>nuclear </li></ul>
8. 8. Law of Conservation of Energy <ul><li>This law states that when one form of energy is transformed into another no energy is destroyed In the process. </li></ul><ul><li>Energy cannot be created or destroyed </li></ul><ul><li>Einstein discovered that when you destroy matter you can sometimes create energy </li></ul><ul><li>The law was changed to say matter and energy are always conserved. </li></ul>
9. 9. THE END!!! <ul><li>Thanks for watching I hope you learned a lot about energy! </li></ul>