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# Energy3

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### Energy3

1. 1. ENERGY
2. 2. What is ENERGY? Energy is the ability to do _______ Work
3. 3. Work occurs when a _____ causes an object to _____ in the same direction as the force. move force
4. 5. DO NOW: <ul><li>Page 25 in Do Now packet that was given out yesterday </li></ul>
5. 6. All forms of energy can be classified as Kinetic or potential. The two basic states of energy. So, what’s the difference?
6. 10. 1) Potential energy is stored energy due to and object’s _____________ Position POTENTIAL ENERGY
7. 11. 2) An object that is lifted from its position on Earth has __________ potential Energy which depends on ______ and mass gravitational POTENTIAL ENERGY height
8. 12. 3) Massive objects have _____ potential energy than less massive objects more POTENTIAL ENERGY
9. 13. 4) An object at a higher elevation will have _____ potential energy than an object at a lower elevation more POTENTIAL ENERGY
10. 14. <ul><li>Kinetic is energy of </li></ul><ul><li>___________ </li></ul>Motion KINETIC ENERGY
11. 15. 2) Kinetic depends on the _____ and the _______ of an object. MASS KINETIC ENERGY SPEED
12. 16. 3) Faster objects have ____ kinetic energy than slower objects. More KINETIC ENERGY
13. 17. FORMS OF ENERGY <ul><li>Both basic states of energy, Kinetic and potential, can exist in many forms! </li></ul>
14. 18. The total ________ energy of the particles in matter. (molecular motion) Kinetic THERMAL (HEAT)
15. 19. Heat energy STORED within the _____. Ex: Volcanic eruptions, geysers Earth GEOTHERMAL (HEAT)
16. 20. Energy STORED in chemical ____ that can be released. Ex: food, fossil fuels, battery acid bonds CHEMICAL
17. 21. Energy STORED in the ________ (center) of an atom . Ex: nuclear bombs nucleus NUCLEAR
18. 22. Energy with which ______ objects perform work. Ex: Wind, flowing water, using a hammer moving MECHANICAL
19. 23. A type of mechanical energy. It is the energy produced when objects ________. Ex: tuning fork, bell vibrate SOUND
20. 24. A form of _______ energy that moves in a ______. Ex: lamp, stars radiant LIGHT wave
21. 25. A form of energy produced by the ________ of ________ movement ELECTRICITY electrons
22. 26. All forms of energy that come from the ______. SUN SOLAR ENERGY
23. 27. Stored energy due to a change in the shape of an object. Ex: _______________ A stretched rubber band STORED MECHANICAL ENERGY:
24. 28. STORED MECHANICAL ENERGY:
25. 29. Do you remember the LAW OF CONSERVATION OF MASS AND ENERGY? ENERGY TRANSFORMATIONS
26. 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!!!
27. 31. Please read the paragraph… Energy is constantly changing form… ENERGY TRANSFORMATIONS
28. 32. ENERGY TRANSFORMATIONS
29. 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:
30. 34. An energy resource that is _______________________________________ . Being used faster than Earth Produces it What is a NON-RENEWABLE RESOURCE?
31. 35. Examples: __________________ Fossil Fuels, minerals What is a NON-RENEWABLE RESOURCE?
32. 36. To make our non-renewable resources last longer we can _____________________________________________ . Reduce Reuse Recycle What is a NON-RENEWABLE RESOURCE?
33. 37. An energy resource that is _______________________________________ . Earth supplies faster than we use it “unlimited” What is a RENEWABLE RESOURCE?
34. 38. Examples: _______________________________ Solar, wind, biomass (trees etc..) What is a RENEWABLE RESOURCE?
35. 39. A renewable resource produces less _________ (substance that can harm living things and/or the environment pollution What is a RENEWABLE RESOURCE?
36. 40. EARTH DAY GALLERY TOUR!
37. 42. Example:
38. 43. Do Now: Focused Free Write <ul><li>What is different about how each of the three popcorns? How were they made? Explain! </li></ul>
39. 44. 1. HEAT: the energy of moving __________ particles HEAT NOTES
40. 45. 2. HOT OBJECTS contain __________ heat than than cold ones more HEAT NOTES
41. 46. 3. All objects above __________ contain heat Absolute zero HEAT NOTES
42. 47. 4. Heat always flows from ______ objects to ______ objects until the objects reach _____ temperature. hotter HEAT NOTES cooler same
43. 48. 4. The greater the difference in temperature between the two objects, the _________ heat is transferred. faster HEAT NOTES
44. 49. HOW IS HEAT TRANSFERRED BETWEEN OBJECTS?
45. 50. -Conduction is a form of heat transfer by direct _______ of molecules contact 1) CONDUCTION
46. 51. -Conduction occurs fastest in _______ solids 1) CONDUCTION
47. 52. -_______ are the best conductors of he heat energy. metals 1) CONDUCTION
48. 53. -Convection is a form of heat transfer that occurs by up and down motions of a _______ differences in ______ fluid 2) CONVECTION density
49. 54. -occurs ONLY in _____ which are liquids and gases! fluids 2) CONVECTION
50. 55. -radiation is the transfer of heat in _____. waves 3) RADIATION
51. 56. -Electromagnetic radiation travels at the speed of ______. light 3) RADIATION
52. 57. -Electromagnetic energy can travel though a _______ (empty space) vacuum 3) RADIATION
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