1. ELECTRICITY shocking

2. Law of conservation of charge Duhhhh Duhhhh Someone raise their hand and tell me this. Someone raise their hand and tell me this.

3. Static electricity The accumulation of excess charge on an object. The accumulation of excess charge on an object.

4. Walking on carpet Rubber has a stonger hold on electrons than carpet does. Rubber has a stonger hold on electrons than carpet does. When you rub your feet on carpet the carpet loses electrons to your shoes. When you rub your feet on carpet the carpet loses electrons to your shoes. Your shoes become__________ charged and the carpet becomes_________ charged. Your shoes become__________ charged and the carpet becomes_________ charged.

5. Excess charge

6. What do these tell us about charges?

7. 3 ways to charge Conduction Conduction Friction Friction Induction Induction

8. conduction Charging by conduction involves the contact of a charged object to a neutral object. Charging by conduction involves the contact of a charged object to a neutral object.

9. friction Rubbing things together causing one thing to lose electrons and the other to gain them. Rubbing things together causing one thing to lose electrons and the other to gain them.

10. induction to charge an object without actually touching the object to any other charged object. to charge an object without actually touching the object to any other charged object.

11. Let’s get our balloon on. I want to create some cool pics of you guys demonstrating induction, friction, conduction. I want to create some cool pics of you guys demonstrating induction, friction, conduction. Make a sign with one of these words and perform a demo to explain it so I can take a pic for the slide show. Make a sign with one of these words and perform a demo to explain it so I can take a pic for the slide show.

12. Label each a b c

13. C:\Documents and Settings\Admin\Desktop\121807 112808.jpg C:\Documents and Settings\Admin\Desktop\121807 112808.jpg C:\Documents and Settings\Admin\Desktop\121807 112808.jpg C:\Documents and Settings\Admin\Desktop\121807 112808.jpg

14. C:\Documents and Settings\Admin\Desktop\121807 112905.jpg C:\Documents and Settings\Admin\Desktop\121807 112905.jpg C:\Documents and Settings\Admin\Desktop\121807 112905.jpg C:\Documents and Settings\Admin\Desktop\121807 112905.jpg

15. C:\Documents and Settings\Admin\Desktop\121807 112948.jpg C:\Documents and Settings\Admin\Desktop\121807 112948.jpg C:\Documents and Settings\Admin\Desktop\121807 112948.jpg C:\Documents and Settings\Admin\Desktop\121807 112948.jpg

16. C:\Documents and Settings\Admin\Desktop\121807 112730.jpg C:\Documents and Settings\Admin\Desktop\121807 112730.jpg C:\Documents and Settings\Admin\Desktop\121807 112730.jpg C:\Documents and Settings\Admin\Desktop\121807 112730.jpg

20. weather-this is static electricity

21. Dry air makes static electricity easier to create

22. Copy these questions. static.mov static.mov static.mov Where is the woman? Where is the woman? What time of year is it? What time of year is it? Is the time of year important? Is the time of year important? What starts the fire? What starts the fire? When exactly is the fire started? When exactly is the fire started?

23. If you look at any battery, you'll notice that it has two terminals. One terminal is marked (+), or positive, while the other is marked (-), or negative. If you look at any battery, you'll notice that it has two terminals. One terminal is marked (+), or positive, while the other is marked (-), or negative.

24. Electrons collect on the negative terminal of the battery. If you connect a wire between the negative and positive terminals, the electrons will flow from the negative to the positive terminal as fast as they can Electrons collect on the negative terminal of the battery. If you connect a wire between the negative and positive terminals, the electrons will flow from the negative to the positive terminal as fast as they can

25. We put stuff between those terminals like bulbs and motors!

26. Simple circuit A circuit is a closed path in which electrons flow.

27. Simple circuit symbols Switch Switch Wire Wire Bulb Bulb battery battery

28. circuits What is an electrical circuit? What is an electrical circuit?

31. Questions for your circuit 1. Name the objects on your desk. 1. Name the objects on your desk. 2. When does the light come on? 2. When does the light come on? 3. When does the light not burn? 3. When does the light not burn? 4. What part of your object is a conductor? 4. What part of your object is a conductor? 5. What part is an insulator? 5. What part is an insulator? 6. What type of current usually runs through your object? 6. What type of current usually runs through your object? 7. A Circuit is…….. 7. A Circuit is…….. 8. Current is……. 8. Current is……. 9. draw a large clear circuit diagram. 9. draw a large clear circuit diagram.

33. You will need to understand a simple math problem for electricity. V=IR is called ohms law V=IR is called ohms law Voltage = current X resistance Voltage = current X resistance

34. resistance Is the tendency for a material to oppose the flow of electrons, this changes the electrical energy to heat and light. Is the tendency for a material to oppose the flow of electrons, this changes the electrical energy to heat and light. Everything has some resistance except for a superconductor. Even copper wire has resistance. Everything has some resistance except for a superconductor. Even copper wire has resistance.

35. Steel wool and a battery

36. Describe the cord that comes with a window air conditioner.

37. So wires and resistance work like this. Shorter less resistance Shorter less resistance Thicker less resistance Thicker less resistance

38. 220v and 110v

39. Try 1,3,4 on 205 We’ll discuss We’ll discuss

40. Using V=IR Try 6,7 on 205 Try 6,7 on 205

42. http://www.glenbrook.k12.il.us/gbs sci/phys/Class/circuits/u9l4a.html Check this page out. Check this page out.

43. Two types of circuits Series-in a row Series-in a row Parallel-along side of each other Parallel-along side of each other

44. series Lights get dim as you add more. Lights get dim as you add more.

45. parallel Follow the path of electrons. Follow the path of electrons. All lights burn equally! All lights burn equally!

46. You know V=IR Now look at P=IV Now look at P=IV P stands for power P stands for power Power is measured in watts! Power is measured in watts! Check next slide. Check next slide. Eassssssyyyyyyyyyy. Eassssssyyyyyyyyyy.

47. A motor has a 4 amp current flowing through it. It has a 6 volt battery. What is the power of the motor? A motor has a 4 amp current flowing through it. It has a 6 volt battery. What is the power of the motor? P=IV P=IV