1. New Area of Focus, Electricity and Magnetism
Copyright © 2010 Ryan P. Murphy

2. What would life be like without it electricity?
Copyright © 2010 Ryan P. Murphy

3. Much different than it is for most of us.

4. Much different than it is for most of us.

5. Does somebody want to try and define the word electricity?

6. There is no single definition called "electricity."
ELECTRICITY DOES NOT EXIST
Copyright © 2010 Ryan P. Murphy

7. Electricity is a variety of independent science concepts all with one single name.
Copyright © 2010 Ryan P. Murphy

8. These are the questions and definitions we need to generate a definition for electricity?
What is electric charge?
What is electrical energy?
What are electrons
What is electric current?
What is an imbalance of charge?
What is an electric field?
What is voltage?
What is electric power?
What is a spark?
What is electromagnetism?
What is electrical science?
What is electrodynamics?
What is electrostatics?
What are electrical phenomena?
Copyright © 2010 Ryan P. Murphy

9. Electricity is related to charges, and both electrons (-) and protons (+) carry a charge.
Copyright © 2010 Ryan P. Murphy

10. Video! Introduction to Electricity

11. We will skip most of the atomic information
We will skip most of the atomic information. We will examine circuits and static charges for this unit.
Copyright © 2010 Ryan P. Murphy

12. Electrons are negatively charged
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13. Electrons are negatively charged
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14. Electrons are negatively charged
Protons (nucleus) are positively charged
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15. Electrons are negatively charged
Protons (nucleus) are positively charged
Copyright © 2010 Ryan P. Murphy

16. Electrons are negatively charged
Protons (nucleus) are positively charged
Copyright © 2010 Ryan P. Murphy

17. Electrons are negatively charged
Protons (nucleus) are positively charged
Their charges are about equal
Copyright © 2010 Ryan P. Murphy

18. Electrons are negatively charged
Protons (nucleus) are positively charged
Add Electrons – Atom becomes more negatively charged.
Copyright © 2010 Ryan P. Murphy

19. Electrons are negatively charged
Protons (nucleus) are positively charged
Take away (strip) electrons than the atom becomes more positively charged.
Copyright © 2010 Ryan P. Murphy

20. Life occurs because of electrostatic charges.

21. Life occurs because of electrostatic charges.
Without them, life would simple unravel.

22. Lightning is a big spark that occurs when electrons move from one place to another very quickly because of the unequal distribution of electrons.
Copyright © 2010 Ryan P. Murphy

23. Electric Fields: The funky area near any electrically-charged object.
Replace electrostatic for funky.
Copyright © 2010 Ryan P. Murphy

24. Electric Fields: The funky area near any electrically-charged object.
Replace electrostatic for funky.
Copyright © 2010 Ryan P. Murphy

25. Electric Fields: The funky area near any electrically-charged object.
Replace electrostatic for funky.
Copyright © 2010 Ryan P. Murphy

26. Copyright © 2010 Ryan P. Murphy

27. Opposite charges attract.
Copyright © 2010 Ryan P. Murphy

28. Opposite charges attract.
Copyright © 2010 Ryan P. Murphy

29. The Same forces repel.
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30. The Same forces repel.
Copyright © 2010 Ryan P. Murphy

31. Which one is right and which is wrong?
Copyright © 2010 Ryan P. Murphy

32. Which one is right and which is wrong? Answer: They are both wrong.
Copyright © 2010 Ryan P. Murphy

33. Which one is right and which is wrong? Answer: They are both wrong.
Copyright © 2010 Ryan P. Murphy

34. Which one is right and which is wrong? Answer: They are both wrong.
Copyright © 2010 Ryan P. Murphy

35. Which one is right and which is wrong? Answer: They are both wrong.
Copyright © 2010 Ryan P. Murphy

36. Which one is right and which is wrong? Answer: They are both wrong.
Copyright © 2010 Ryan P. Murphy

37. Which one is right and which is wrong? Answer: They are both wrong.
Copyright © 2010 Ryan P. Murphy

38. Which one is right and which is wrong?
Answer: Now they are both right.
Copyright © 2010 Ryan P. Murphy

39. Static Electricity: The imbalance of positive and negative charges.
Copyright © 2010 Ryan P. Murphy

40. Activity- Bad Hair Day Demonstration.
Rub parachute all around head.
Question: Why does this happen?
Copyright © 2010 Ryan P. Murphy

41. Electrons from your body move into the parachute (hat or sweater).
Answer!
Electrons from your body move into the parachute (hat or sweater).
This gives you a positive charge.
Your hair is also positive.
Like charges repel so hair tries to get away from body.
Copyright © 2010 Ryan P. Murphy

42. Electrons from your body move into the parachute (hat or sweater).
Answer!
Electrons from your body move into the parachute (hat or sweater).
This gives you a positive charge.
Your hair is also positive.
Like charges repel so hair tries to get away from body.
Copyright © 2010 Ryan P. Murphy

43. Electrons from your body move into the parachute (hat or sweater).
Answer!
Electrons from your body move into the parachute (hat or sweater).
This gives you a positive charge.
Your hair is also positive.
Like charges repel so hair tries to get away from body.
Copyright © 2010 Ryan P. Murphy

44. Electrons from your body move into the parachute (hat or sweater).
Answer!
Electrons from your body move into the parachute (hat or sweater).
This gives you a positive charge.
Your hair is also positive.
Like charges repel so hair tries to get away from body.
Copyright © 2010 Ryan P. Murphy

45. Electrons from your body move into the parachute (hat or sweater).
Answer!
Electrons from your body move into the parachute (hat or sweater).
This gives you a positive charge.
Your hair is also positive.
Like charges repel so hair tries to get away from body.
Copyright © 2010 Ryan P. Murphy

46. Answer!
Electrons from your body move into the parachute (hat or sweater).
This gives you a positive charge.
Your hair is also positive.
Like charges repel so hair tries to get away from body. + + +
Copyright © 2010 Ryan P. Murphy

47. Demonstration - Static Electricity
Observe two balloons without a build up of a charge.
Copyright © 2010 Ryan P. Murphy

48. Demonstration - Static Electricity
Observe two balloons without a build up of a charge.
Now rub balloons in parachute.
How are the behaving now?
Copyright © 2010 Ryan P. Murphy

49. Demonstration - Static Electricity
Observe two balloons without a build up of a charge.
Now rub balloons in parachute.
How are the behaving now?
Copyright © 2010 Ryan P. Murphy

50. Demonstration - Static Electricity
Observe two balloons without a build up of a charge.
Now rub balloons in parachute.
How are the behaving now?
Copyright © 2010 Ryan P. Murphy

51. Demonstration - Static Electricity
Observe two balloons without a build up of a charge.
Now rub balloons in parachute.
How are the behaving now?
Copyright © 2010 Ryan P. Murphy

52. Activity! Static Balloons
Blow up a balloon and tie it off.
Write name on it with soft pen.
Rub balloon against hair and quickly stick to wall (everyone together).
Observe what happens, Whose balloon will last the longest?
Copyright © 2010 Ryan P. Murphy

53. Activity! Static Balloons
Blow up a balloon and tie it off.
Write name on it with soft pen.
Rub balloon against hair and quickly stick to wall (everyone together).
Observe what happens, Whose balloon will last the longest?
Copyright © 2010 Ryan P. Murphy

54. Activity! Static Balloons
Blow up a balloon and tie it off.
Write name on it with soft pen.
Rub balloon against hair and quickly stick to wall (everyone together).
Observe what happens, Whose balloon will last the longest?
Copyright © 2010 Ryan P. Murphy

55. Activity! Static Balloons
Blow up a balloon and tie it off.
Write name on it with soft pen.
Rub balloon against hair and quickly stick to wall (everyone together).
Observe what happens, Whose balloon will last the longest?
Copyright © 2010 Ryan P. Murphy

56. Activity! Static Balloons
Blow up a balloon and tie it off.
Write name on it with soft pen.
Rub balloon against hair and quickly stick to wall (everyone together).
Observe what happens, Whose balloon will last the longest?
Copyright © 2010 Ryan P. Murphy

57. Activity! Static Balloons
Blow up a balloon and tie it off.
Write name on it with soft pen.
Rub balloon against hair and quickly stick to wall (everyone together).
Observe what happens, Whose balloon will last the longest?
Copyright © 2010 Ryan P. Murphy

58. Answer to wall sticking balloon.
Electrons from hair are removed and put into balloon.
Balloon has slight negative charge.
The atoms orient and wall has slight positive charge.
Like charges attract and balloon sticks.

59. Answer to wall sticking balloon.
Electrons from hair are removed and put into balloon.
Balloon has slight negative charge.
The atoms orient and wall has slight positive charge.
Like charges attract and balloon sticks.

60. Answer to wall sticking balloon.
Electrons from hair are removed and put into balloon.
Balloon has slight negative charge.
The atoms orient and wall has slight positive charge.
Like charges attract and balloon sticks.

61. Answer to wall sticking balloon.
Electrons from hair are removed and put into balloon.
Balloon has slight negative charge.
The atoms orient and wall has slight positive charge.
Like charges attract and balloon sticks.

62. Answer to wall sticking balloon.
Electrons from hair are removed and put into balloon.
Balloon has slight negative charge.
The atoms orient and wall has slight positive charge.
Opposite charges attract and balloon sticks.

63. Answer to wall sticking balloon.
Electrons from hair are removed and put into balloon.
Balloon has slight negative charge.
The atoms orient and wall has slight positive charge.
Opposite charges attract and balloon sticks.

65. We usually only notice static electricity in the winter when the air is very dry. During the summer, the air is more humid.

66. We usually only notice static electricity in the winter when the air is very dry. During the summer, the air is more humid.
The water in the air helps electrons move off you more quickly, so you can not build up as big a static charge.

67. If your car gets struck by lightning in a thunderstorm, will you be safe. Why?

68. If your car gets struck by lightning in a thunderstorm, will you be safe. Why?

69. Answer: You will be safe because your cars metal chassis acts like a Faraday Cage. The charged particles travel around the outside of the car and into the ground.

70. Answer: You will be safe because your cars metal chassis acts like a Faraday Cage. The charged particles travel around the outside of the car and into the ground.

71. Answer: You will be safe because your cars metal chassis acts like a Faraday Cage. The charged particles travel around the outside of the car and into the ground.

72. Answer: You will be safe because your cars metal chassis acts like a Faraday Cage. The charged particles travel around the outside of the car and into the ground.