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# Energy Web Version

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• Use laser disc after this slide. Vol. 3 Work, Energy and Machines pp. 14-17
• We can calculate work with a math formula. LD 18-21
• Laser Disc 24-25
• Video on picture
• ### Energy Web Version

1. 1. You Need:<br />Scientist’s Notebook<br />Pen <br />Pencils<br />Art Supplies<br />
2. 2. Make a list of everything you did this morning from the time you got up until the time you walked into the school.<br />
3. 3. Did you use any of these things?<br />
4. 4.
5. 5. What is one thing that they all have in common?<br />They all involve energy<br />
6. 6. Energy<br /><ul><li>The ability to do work or make something happen</li></ul>But….<br />What is work?<br />
7. 7. Work<br />Using force (a push or pull) to make something move through a distance <br />
8. 8. So energy is…<br />The ability to make something move or make something happen or the ability to do work<br />
9. 9. What are the different types of energy?<br />List as many as you can think of in your Scientist’s Notebook.<br />
10. 10. There are only 2 types of energy:<br />Potential<br />Kinetic<br />
11. 11. Potential<br />Kinetic<br />
12. 12. Potential Energy<br />Energy that is stored. <br />Hasn’t been used yet.<br />2 Causes of Potential Energy:<br />1. An object’s position<br />
13. 13. <ul><li>An object’s position</li></ul>(2 Ways)<br />Because of vertical position or height<br />More height = more energy<br />Caused by gravity<br />
14. 14. Potential Energy based on Position<br /><ul><li>Caused by Gravity
15. 15. Because of vertical position or height.
16. 16. More height = More energy</li></li></ul><li>More height = more energy…<br />Which has more potential energy?<br />
17. 17. What about this? When they both finish moving their objects to the top, which object will have more potential energy?<br />
18. 18. <ul><li>An object’s position</li></ul>(2 Ways)<br />(Being stretched beyond its normal position)<br />Because of vertical position or height<br />Position can be like spring or bow and arrow<br />More height = more energy<br />Because of Elasticity - elastic<br />Caused by gravity<br />
19. 19. PE because of Position<br />Because of Elasticity - elastic<br />
20. 20. PE because of position…<br />
21. 21. PE because of position…gravity or elasticity?<br />
22. 22. <ul><li>An object’s condition</li></ul>Like a battery,<br />Gasoline or the bonds between something’s atoms<br />Because of its atoms<br />
23. 23. Potential energy can also be because of an object’s condition.<br />
24. 24. Potential<br />Kinetic<br /><ul><li>Energy that is stored
25. 25. Hasn’t been used yet.
26. 26. Comes from:
27. 27. An object’s position
28. 28. An object’s condition</li></ul>Caused by gravity<br />Position can be like spring or bow and arrow<br />More height = more energy<br />Because of vertical position or height<br />Like a battery,<br />Gasoline or the bonds between something’s atoms<br />Because of its atoms<br />
29. 29. Once the energy is put to use it becomes….Kinetic Energy<br />Energy in motion<br />Energy that’s being used<br />
30. 30. Potential energy (stored energy) gets converted to kinetic energy, (or energy of motion).<br />
31. 31. More examples….<br />
32. 32.
33. 33. What are some examples of potential and kinetic energy?<br />
34. 34.
35. 35.
36. 36. More about Potential and Kinetic Energy<br />Brainpop on Potential and Kinetic Energy<br />
37. 37. Now it’s your turn:<br /><ul><li>Think of an example of potential and kinetic energy.
38. 38. You will be making a flip book to illustrate your example.
39. 39. Let’s make our book first.</li></li></ul><li>Take your white paper and fold it in half horizontally.<br />
40. 40. <ul><li>Fold in half again.
41. 41. Unfold the last fold you made.
42. 42. Take your scissors and cut along the fold line on the top flap only.</li></li></ul><li>Label one side “Potential Energy” and the other side “Kinetic Energy”<br />
43. 43. <ul><li>On your other sheet of white paper, make a practice drawing. Don’t use much detail. It’s not your real one.
44. 44. Give me the signal to approve it.
46. 46. It must be colored, and your words must be in ink.
47. 47. Do the whole thing in pencil first, then go over it with markers, colored pencils, etc. (In case you mess up!)</li></li></ul><li>BBC Web Activity<br />There’s more!<br />
48. 48. There are 2 types of energy:<br />Potential<br />Kinetic<br />Energy can exist in many forms:<br />(Video Clip)<br />
49. 49. Forms of energy:<br />http://www.brainpop.com/science/energy/formsofenergy/<br />
50. 50. Forms of energy<br />Mechanical <br />Heat <br />Chemical<br />Electrical<br />Radiant<br />Nuclear<br />Sound<br />
51. 51. Make your notes<br /> look like this:<br />Fit 2 energy forms per page!<br />Draw a quick picture of one example of each energy form<br />
52. 52. Mechanical Energy<br />Energy of moving objects<br />
53. 53. Heat (or thermal) Energy<br /><ul><li>Energy from quick moving molecules or atoms</li></li></ul><li>Chemical<br /><ul><li>Energy stored in atoms and molecules because of their bonds.
54. 54. Ex: natural gas, propane, coal, biomass</li></li></ul><li>Electrical<br />Energy produced when electrons flow (or move).<br />Ex: Lightning, electricity<br />
55. 55. Radiant<br />Electromagnetic energy that travels in waves through empty space<br />Ex: light, x-rays, radio waves, solar energy<br />
56. 56.
57. 57. Nuclear<br />Energy stored in the nucleus of an atom<br />The force that holds the neutrons and protons together is very strong. If you break that bond, it releases LOTS of energy!!<br />
58. 58. <ul><li>Intro to Nuclear Energy
59. 59. Nuclear Medicine
60. 60. The Bomb</li></li></ul><li>Sound <br />Sound is energy??? You bet!!<br />Energy that moves in waves through substances.<br />
61. 61. Sound energy travels in waves.<br />
62. 62. Let’s talk more about Heat Energy or Thermal Energy<br />Remember that it’s the energy caused by the movement of particles in an object.<br />Turn to the next available page in your Scientist’s Notebook.<br />At the top write HEAT<br />Make a T-Chart<br />
63. 63. I didn’t know that…<br />I knew that!<br />
64. 64.
65. 65. Let’s compare lists.<br />
66. 66. What is heat?<br />Energy from an object’s moving particles.<br />The faster the particles are moving, the more heat energy the matter has.<br />Thermal Energy<br />
67. 67. Temperature is…<br />A measure of how fast an object’s particles are moving.<br />Measured with a thermometer<br />So…thermometers don’t measure Heat. They measure temperature!<br />
68. 68. Heat…<br />Always moves from warmer matter to cooler matter! <br />Memorize this!!!!<br />When heat moves,<br />It’s called…<br />
69. 69. Heat Transfer<br />(or How Heat Travels)<br /><ul><li>Conduction
70. 70. Convection
72. 72. Conduction<br /><ul><li>When heat moves from particle to particle because they are touching each other.
73. 73. Happens mostly in solids
74. 74. Only happens when particles are TOUCHING!!!
75. 75. Example: A pot on a stove eye heats up because the fast moving particles of the eye bump into the particles of the pot, and the energy is transferred.</li></li></ul><li><ul><li>When an object’s particles get heated, the particles move faster and bump into the nearby particles.</li></li></ul><li>Convection<br /><ul><li>Heat is transferred by the heated matter moving.
76. 76. Occurs in liquids and gases
77. 77. Steps:
78. 78. Matter is heated and becomes less dense.</li></li></ul><li><ul><li>Since the heated matter is less dense, it rises.
79. 79. The cooler matter slides in to take its place.</li></li></ul><li>Convection, cont.<br /><ul><li>Example: Boiling water- The water at the bottom is heated, expands, becomes less dense, then rises. The water above is still cool, so it sinks</li></li></ul><li>Convection causes thunderheads.<br />
80. 80. Convection causes wind – especially at the beach!<br />
81. 81. Convection helps us heat our home, cool our food, and even cook our food!<br />