Energy is the ability to do work. It exists in two basic states: kinetic energy and potential energy. Kinetic energy depends on an object's mass and speed, while potential energy depends on an object's position or stored energy. Energy can change forms through transformations but cannot be created or destroyed according to the law of conservation of energy.

1. ENERGY

2. What is ENERGY? Energy is the ability to do _______ Work

3. Work occurs when a _____ causes an object to _____ in the same direction as the force. move force

6. All forms of energy can be classified as Kinetic or potential. The two basic states of energy. So, what’s the difference?

10. 1) Potential energy is stored energy due to and object’s _____________ Position POTENTIAL ENERGY

11. 2) An object that is lifted from its position on Earth has __________ potential Energy which depends on ______ and mass gravitational POTENTIAL ENERGY height

12. 3) Massive objects have _____ potential energy than less massive objects more POTENTIAL ENERGY

13. 4) An object at a higher elevation will have _____ potential energy than an object at a lower elevation more POTENTIAL ENERGY

15. 2) Kinetic depends on the _____ and the _______ of an object. MASS KINETIC ENERGY SPEED

16. 3) Faster objects have ____ kinetic energy than slower objects. More KINETIC ENERGY

18. The total ________ energy of the particles in matter. (molecular motion) Kinetic THERMAL (HEAT)

19. Heat energy STORED within the _____. Ex: Volcanic eruptions, geysers Earth GEOTHERMAL (HEAT)

20. Energy STORED in chemical ____ that can be released. Ex: food, fossil fuels, battery acid bonds CHEMICAL

21. Energy STORED in the ________ (center) of an atom . Ex: nuclear bombs nucleus NUCLEAR

22. Energy with which ______ objects perform work. Ex: Wind, flowing water, using a hammer moving MECHANICAL

23. A type of mechanical energy. It is the energy produced when objects ________. Ex: tuning fork, bell vibrate SOUND

24. A form of _______ energy that moves in a ______. Ex: lamp, stars radiant LIGHT wave

25. A form of energy produced by the ________ of ________ movement ELECTRICITY electrons

26. All forms of energy that come from the ______. SUN SOLAR ENERGY

27. Stored energy due to a change in the shape of an object. Ex: _______________ A stretched rubber band STORED MECHANICAL ENERGY:

28. STORED MECHANICAL ENERGY:

29. Do you remember the LAW OF CONSERVATION OF MASS AND ENERGY? ENERGY TRANSFORMATIONS

30. Law of Conservation of ENERGY: (same for mass) Mass/ NRG ____________ Mass/ NRG ______________ Mass/ Energy can only __________ Can’t be made Can’t be destroyed Change form!!!

31. Please read the paragraph… Energy is constantly changing form… ENERGY TRANSFORMATIONS

32. ENERGY TRANSFORMATIONS

33. Very often during the energy transformation process, some ____ energy is produced due to friction. This is wasted energy and is lost to the environment. heat UNUSABLE ENERGY:

34. An energy resource that is _______________________________________ . Being used faster than Earth Produces it What is a NON-RENEWABLE RESOURCE?

35. Examples: __________________ Fossil Fuels, minerals What is a NON-RENEWABLE RESOURCE?

36. To make our non-renewable resources last longer we can _____________________________________________ . Reduce Reuse Recycle What is a NON-RENEWABLE RESOURCE?

37. An energy resource that is _______________________________________ . Earth supplies faster than we use it “unlimited” What is a RENEWABLE RESOURCE?

38. Examples: _______________________________ Solar, wind, biomass (trees etc..) What is a RENEWABLE RESOURCE?

39. A renewable resource produces less _________ (substance that can harm living things and/or the environment pollution What is a RENEWABLE RESOURCE?

40. EARTH DAY GALLERY TOUR!

42. Example:

44. 1. HEAT: the energy of moving __________ particles HEAT NOTES

45. 2. HOT OBJECTS contain __________ heat than than cold ones more HEAT NOTES

46. 3. All objects above __________ contain heat Absolute zero HEAT NOTES

47. 4. Heat always flows from ______ objects to ______ objects until the objects reach _____ temperature. hotter HEAT NOTES cooler same

48. 4. The greater the difference in temperature between the two objects, the _________ heat is transferred. faster HEAT NOTES

49. HOW IS HEAT TRANSFERRED BETWEEN OBJECTS?

50. -Conduction is a form of heat transfer by direct _______ of molecules contact 1) CONDUCTION

51. -Conduction occurs fastest in _______ solids 1) CONDUCTION

52. -_______ are the best conductors of he heat energy. metals 1) CONDUCTION

53. -Convection is a form of heat transfer that occurs by up and down motions of a _______ differences in ______ fluid 2) CONVECTION density

54. -occurs ONLY in _____ which are liquids and gases! fluids 2) CONVECTION

55. -radiation is the transfer of heat in _____. waves 3) RADIATION

56. -Electromagnetic radiation travels at the speed of ______. light 3) RADIATION

57. -Electromagnetic energy can travel though a _______ (empty space) vacuum 3) RADIATION