1. Energy Conservation and Conversions

2. Food for thought… 1.What does “conservation” mean? 2.Does the ball lose energy? Gain energy?

3. Law of Conservation of Energy Energy cannot be created or destroyed; it can only be transformed from one form to another The amount of total energy in the universe DOES NOT change!

4. Potential Energy + Kinetic Energy = 100% 100% potential energy is always at the top 100% kinetic energy is always at the bottom The middle is a combination of both

5. At the top: 100% PE At the bottom: 100% KE In the middle: a combination of both PE and KE

6. Energy Conversions Energy Conversion: a change from one form of energy to another (also know as transformations) Energy Conversions (changes) are needed for everything we do. Example: Drive Chemical EnergyMechanical Energy

7. Light Bulb Input: Output:

8. Light Bulb Input: Electrical Energy Output: Light Energy ELECTRICAL ENERGY KINETIC ENERGY Light ENERGY KINETIC ENERGY

9. Electric Oven Input: Output:

10. Electric Oven Input: Electricity Output: Heat

11. Electric Oven Input: Electricity Output: Heat ELECTRICAL ENERGY KINETIC ENERGY THERMAL ENERGY KINETIC ENERGY

12. Battery Powered Flashlight Input: Output:

13. Battery Powered Flashlight Input: Batteries Output: Light

14. Battery Powered Flashlight Input: Chemical Energy Output: Light Energy Light ENERGY KINETIC ENERGY POTENTIAL ENERGY CHEMICAL ENERGY

15. Coal Power Plant Input: Output:

16. Coal Power Plant Input: Coal Output: Electricity

17. Coal Power Plant Input: Coal Output: Electricity POTENTIAL ENERGY CHEMICAL ENERGY ELECTRICAL ENERGY KINETIC ENERGY

18. Tree Input: Output:

19. Tree Input: Sunlight Output: Wood

20. Tree Input: Sunlight Output: Wood POTENTIAL ENERGY CHEMICAL ENERGY POTENTIAL ENERGY NUCLEAR ENERGY

21. Ipod Shuffle Input: Output:

22. Ipod Shuffle Input: Batteries Output: Sound

23. Ipod Shuffle Input: Batteries Output: Sound POTENTIAL ENERGY CHEMICAL ENERGY SOUND ENERGY KINETIC ENERGY ( ( ( ( ( (

24. Solar Panels Input: Output:

25. Solar Panels Input: Light Output: Electricity

26. Solar Panels Input: Light Output: Electricity Light ENERGY KINETIC ENERGY ELECTRICAL ENERGY KINETIC ENERGY

27. Input: Output:

28. Nuclear Power Plant Input: Nuclear Fission Output: Electricity

29. Nuclear Power Plant Input: Nuclear Fission Output: Electricity POTENTIAL ENERGY NUCLEAR ENERGY ELECTRICAL ENERGY KINETIC ENERGY

30. Wind Farm Input: Output:

31. Wind Farm Input: Movement Output: Electricity

32. Wind Farm Input: Movement Output: Electricity ELECTRICAL ENERGY KINETIC ENERGY MOVING MECHANICAL ENERGY KINETIC ENERGY

33. Dam (Hydroelectric Plant) Input: Output:

34. Dam (Hydroelectric Plant) Input: Moving Mechanical Energy Output: Electricity

35. Dam (Hydroelectric Plant) Input: Moving Mechanical Energy Output: Electricity MOVING MECHANICAL ENERGY KINETIC ENERGY ELECTRICAL ENERGY KINETIC ENERGY

36. TV Input: Output:

37. TV Input: electricity Output: Sound and light

38. TV Input: electricity Output: Sound and light Light ENERGY KINETIC ENERGY SOUND ENERGY KINETIC ENERGY ( ( ( ( ( ( ELECTRICAL ENERGY KINETIC ENERGY

39. Cell Phone Input: Output:

40. Cell Phone Input: Battery Output: Sound and Light (from screen)

41. Cell Phone Input: Battery Output: Sound and Light POTENTIAL ENERGY CHEMICAL ENERGY Light ENERGY KINETIC ENERGY SOUND ENERGY KINETIC ENERGY ( ( ( ( ( (

42. Projector Input: Output:

43. Projector Input: Electricity Output: Light

44. Projector Input: Electrical Energy Output: Electromagnetic Energy ELECTRICAL ENERGY KINETIC ENERGY Light ENERGY KINETIC ENERGY

45. Fire

46. Input: Wood Output: Heat And Light

47. Fire Input: Wood Output: Heat And Light POTENTIAL ENERGY CHEMICAL ENERGY Light ENERGY KINETIC ENERGY THERMAL ENERGY KINETIC ENERGY

48. The Sun

49. Input: Nuclear Fusion Output: Heat And Light

50. The Sun Input: Nuclear Fusion Output: Heat And Light POTENTIAL ENERGY NUCLEAR ENERGY Light ENERGY KINETIC ENERGY THERMAL ENERGY KINETIC ENERGY

51. Car Input: Output:

52. Car Input: Gas Output: Motion Light Sound

53. SOUND ENERGY KINETIC ENERGY ( ( ( ( ( ( Car Input: Gas Output: MOVING MECHANICAL ENERGY KINETIC ENERGY POTENTIAL ENERGY CHEMICAL ENERGY Light ENERGY KINETIC ENERGY

54. POP QUIZ!!! Put all your stuff away except for your little book and a pencil.

55. Exchange Quizzes Put your name on the back of the person’s quiz you are grading. If they get an answer correct, put a check. If they get an answer wrong, put an x. Put the number correct OUT OF 16 at the top and circle it BEFORE you return the quiz to its’ owner.

56. Chemical----Moving MechanicalPedaling a bicycle uphill Gravitational-----Moving MechanicalA bicycle rolling downhill Chemical----LightA flashlight Nuclear or Light-----ElectricalSolar Calculator Nuclear or Light----ChemicalPhotosynthesis in plant cells Electrical----LightA light bulb Chemical----MechanicalA car Electrical----Mechanical (kinetic)An electric fan

57. Worksheet! You have until the end of class today and some time tomorrow to complete your worksheet! Turn it into the right side of your table folder when you are done!