1. U1C2A3
Record Sheet

2. What are the defining characteristics of an electric-charge interaction?
What are some of the similarities and differences between the magnetic and electric-charge interactions?

4. Sweater, Balloon and Wall Simulation…`

6. What are the defining characteristics of an electric-charge interaction?
What are some of the similarities and differences between the magnetic and electric-charge interactions?

9. Balloon Demo
Play iMovie – clips 6 & 7

10. attract
attract

11. Charged objects attract uncharged objects
Charged objects attract uncharged objects. The charged object (balloon) is attracted to uncharged nonmetallic AND metallic objects.

12. electric-charge movie

14. repel
attract
repel
attract
attract
repel
attract
repel
SAME

15. repel
attract
repel
attract
attract
repel
attract
repel
SAME

16. repel
attract
repel
attract
attract
repel
attract
repel
SAME

17. repel
attract
repel
attract
attract
repel
attract
repel
SAME

18. They attract. Opposites attract!
They repel. Likes repel!
They attract. Opposites attract!

19. The interaction will be the same
The interaction will be the same. I observed that the tape showed the same change in motion (attract or repel) with the sticky side and non-sticky side. When one of the pieces of tape was flipped, I observed the same interaction (flipping or turning does not matter).

21. Characteristics of an electric-charge interaction
In Exploration #1:
1. When a charged object is brought near an uncharged object (metal or nonmetal) they attract (both sides).

22. Characteristics of an electric-charge interaction
In Exploration #2:
2. Opposite charges (+,-) attract (on both sides of the tape)
AND
Like charges (+,+) (-,-) repel (on both sides of the tape)

24. 1. Opposites attract and likes repel (+,-) (N,S) attract
Similarities
1. Opposites attract and likes repel
(+,-) (N,S) attract
(+,+)(-,-)(N,N)(S,S) repel
Magnet to Magnetic material interaction - always attracts (both sides)
Charged object to Uncharged object interaction- always attracts (both sides)
3. Objects must be near each other to interact, but do NOT have to touch

25. List the differences:

26. Differences
1. Electric charge must be created by rubbing or friction (sweater and balloon). Magnets do not need to be charged.
2. Magnet to Magnet interaction- if both magnets attract and you flip 1 magnet, then they will repel.
Electric Charge Interaction- if one side attracts, flip one object, still attracts.
3. Magnets only interact with magnetic materials (nickel, iron or cobalt) or other magnets, whereas charged objects (balloon) interact with metals AND nonmetals (aluminum foil and paper).