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U2C1

U2C1. Vocabulary. When we use energy, it does NOT disappear. energy transfers from object to object A car engine burns gasoline, converting the chemical energy in gasoline into mechanical energy Solar cells change radiant (light) energy into electrical energy. Law of Conservation of Energy.

malcolm-tyson
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U2C1

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  1. U2C1 Vocabulary

  2. When we use energy, it does NOT disappear • energy transfers from object to object • A car engine burns gasoline, converting the chemical energy in gasoline into mechanical energy • Solar cells change radiant (light) energy into electrical energy

  3. Law of Conservation of Energy

  4. Energy • causes interactions • ability to do work or cause change

  5. potential energy stored energy

  6. potential energy

  7. kinetic energy energy in motion

  8. kinetic energy

  9. 14-1 What is energy? red text pages 292-293

  10. Energy • causes interactions • ability to do work or cause change

  11. energy

  12. 1. kinetic energy -the energy of motion ANYTHINGmoving has kinetic energy • Show me your spirit fingers

  13. kinetic energy

  14. different mass, same speed • kinetic energy - motion energy • Depends on mass and speed of object • mass,  KE 20 kph 20 kph

  15. same mass, different speeds • kinetic energy - motion energy • Depends on mass and speed of object 20 kph speed,  KE 75 kph

  16. factors that effect kinetic energy mass,  KE speed,  KE

  17. 2. potential energy- energy that is stored and held in readiness ANYTHINGready and waiting to move has potential energy

  18. 2. potential energy- stored energy ANYTHINGready and waiting to move has potential energy

  19. 2. potential energy- stored energy PE = weight x height

  20. PE = weight x height height,  PE

  21. PE = weight x height weight,  PE

  22. factors that effect potential energy height,  PE mass,  PE

  23. What are the 2 types of energy? kinetic energy -the energy of motion potential energy -energy that is stored and held in readiness

  24. factors that effect kinetic & potential energy mass,  KE speed,  KE height,  PE mass,  PE

  25.  mass,  KE 100lbs 150 lbs

  26.  speed,  KE When does the car have the most KE?: At 25 mph At 55 mph At 100 mph

  27.  height,  PE

  28.  mass,  PE 175 lbs 150 lbs

  29. energy can be transferred • potential energy can be transferred into kinetic energy and vice versa

  30. height , PE height , PE kinetic & potential energy speed , KE speed , KE

  31. potential energy can be transferred into kinetic energy and vice versa mass,  KE speed,  KE height,  PE mass,  PE

  32.                  

  33. 1. Are there any points at which the kinetic energy of the yo-yo is zero? Points 1, 5 and 9

  34. 2. At what points is the potential energy a minimum? Point 5

  35. 3. At what points is potential energy a maximum? Points 1 & 9

  36. 4. What is the energy doing? energy is transferring from potential energy to kinetic energy and vice versa As the yo-yo goes down, PE  and KE  As the yo-yo goes up, PE  and KE 

  37. energy transfers

  38. Light eye flashlight Change in shape (pupil got smaller)

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