**Static Electricity of Scotch Tape Lab**

**Materials:**

4 Pieces of Scotch Tape (about 10 - 15 cm long each)

**Instructions on how to prepare and label your tapes:**

1. Fold over an end of the tape which will be your "handle".

2. Label the end of each tape with a pen.

Label one piece (D_{1}) - Desk 1

Label one piece (D_{2}) - Desk 2

Label one piece (T) - Top

Label one piece (B) - Bottom

**Procedure Part I:**

1. Place the two pieces labeled (D_{1} and D_{2})
on the desk so that they are sticky-side-down on the desk. They should be
sitting side-by-side on your desk, but not touching each other.

2. Quickly rip them off the desk (have one in one of your hands, and the other in your other hand) and answer the following questions.

**Questions for (D _{1}) and (D_{2})
Tapes: (You need to write these numbers on a separate sheet of paper and
turn it in)**

1. Hold the tapes in your hands and bring their non-sticky
sides close together. Do the non-sticky sides **REPEL** or **ATTRACT**
each other? ____________

2. Hold the tapes in your hands and bring their sticky
sides close together. Do the sticky sides **REPEL** or **ATTRACT**
each other? ____________

3. Hold the tapes in your hands and bring the sticky side
of one close together with the non-sticky side of the other. Do these
sticky/non-sticky sides **REPEL** or **ATTRACT** each other?
____________

4. Do the tapes want to **REPEL** or **ATTRACT**
your hand? _____________

5. Based on what you have seen in this lab so far and what you know about like charges repelling each other and opposite charges attracting, Circle the following items that have the same charge as each other. Put a box around the item that has the opposite charge.

Item #1: D_{1}

Item #2: D_{2}

Item #3: Your body

6. Based on what you have seen in this lab: **True or
False: ** The sticky side of a piece of tape has the same charge as the
non-sticky side. _________________

7. Based on what you have seen in this lab: **True or
False: ** Your body has the opposite charge to that of the
tape__________________

**Procedure Part II:**

1. Place the tape labeled (B) on the desk. Place the sticky side of the tape labeled (T) on top of (B). In other words, (B) is on the table, and (T) is on top of (B).

2. Pull (B) off the table so that (B) and (T) remain stuck together.

3. While (B) and (T) are still stuck together, touch both (B) and (T) with your fingers many times to get rid of any charge that might be on them.

4. Rip (B) and (T) apart as quickly as you can. This will put a charge on both (B) and (T).

**Questions for (B) and (T)
Tapes: (You need to write these numbers on a separate sheet of paper and
turn it in)**

8. Hold the tapes in your hands and bring their non-sticky
sides close together. Do the non-sticky sides **REPEL** or **ATTRACT**
each other? ____________

9. Hold the tapes in your hands and bring their sticky
sides close together. Do the sticky sides **REPEL** or **ATTRACT**
each other? ____________

10. Hold the tapes in your hands and bring the sticky side
of one close together with the non-sticky side of the other. Do these
sticky/non-sticky sides **REPEL** or **ATTRACT** each other?
____________

11. Do the tapes want to **REPEL** or **ATTRACT**
your hand? _____________

12. Based on what you have seen in this lab so far and what you know about like charges repelling each other and opposite charges attracting, Circle the following items that have the same charge as each other. Put a box around the item that has the opposite charge. (If you find that an item has both charges - positive AND negative - circle it AND put a box around it)

Item #1: B

Item #2: T

Item #3: Your body

13. Based on what you have seen in this lab: **True or
False: ** The sticky side of the (B) piece of tape has the same charge as the
non-sticky side. _________________

14. Based on what you have seen in this lab: **True or
False:** Your body has the opposite charge to that of the (B) tape__________________
**True or False:** Your body has the opposite charge as that of the (T)
Tape ________

**Procedure Part III:**

1. Now we are going to try to figure out what charges we have on each one of these tapes. I want you to prepare one of your (D) tapes as you did in Procedure Part I. I want you to prepare the (B) and (T) tapes as you did in Procedure Part II.

**Questions for (D), (B) and (T)
Tapes: (You need to write these numbers on a separate sheet of paper and
turn it in)**

15. Bring (D) and (B) close together. Do they ** REPEL**
or ** ATTRACT** ______________

16. Bring (D) and (T) close together. Do they ** REPEL**
or ** ATTRACT** _______________

17. Which two tapes have the exact same charge ________________

18. Which two tapes have the opposite charge _____________

19. Bring (D) close to your body. Does it ** REPEL** or
**
ATTRACT ** __________

20. Bring (B) close to your body. Does it ** REPEL** or
**
ATTRACT ** __________

21. Bring (T) close to your body. Does it ** REPEL** or
**
ATTRACT ** __________

22. **True or False**: Your body will attract both
positive and negative charges ___________

**Procedure Part IV:**

1. We can use an ordinary balloon to determine the charge on the tapes. Rubber balloons pick up electrons very easily. (they become negative when they pick up electrons). Rub a balloon on your hair until it becomes statically charged.

**Questions for the Balloon:**

23. What is the charge on the balloon after you rub it
through your hair **POSITIVE ** or ** NEGATIVE** _______

24. What is the charge on your hair after the comb went
through it ** POSITIVE ** or ** NEGATIVE** ______

25. Bring the balloon next to the (D) labeled tape.
Does it ** REPEL** or **
ATTRACT** __________

26. What is the charge on the (D) tape? **POSITIVE ** or
** NEGATIVE** _____________

27. What is the charge on the (B) tape? **POSITIVE ** or
** NEGATIVE** _____________

28. What is the charge on the (T) tape? **POSITIVE ** or
** NEGATIVE** ____________

**WHAT IS DUE FOR THIS LAB?**

**1. A separate piece of paper with the answers to questions
#1-28**