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Conclusions – PASCO ES-8086 Discover Charge Set User Manual

Page 8

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Discover Charge Set

Model No. ES-8086

8

®

7. Bring the same material near the positive indicator tape. Observe

the behavior of the tape.

8. Record the charge of the 2nd material.

9. Explain how the two materials became charged; include electrons

in your explanation.

10. Place these two materials in the triboelectric series based on their

behavior when rubbed together.

11. Choose one new material and rub it against one of the materials

already used.

12. Repeat steps 2-10 for these two materials.

13. Continue testing until all five materials are ranked within the

triboelectric series.

Conclusions

1. Explain how the materials become charged through their interaction

with one another.

2. Explain in detail the process for ranking the materials. This

explanation can either be in paragraph form or a series of steps.

Teacher Notes:

* The triboelectric series for the materials included in this set is:

Wool (+++++)

Styrene

Polyester

PVC

Teflon (- - - - - -)

* The materials at either end of the triboelectric series are easy to

place, while students may place a few in the middle out of order
since their affinity for electrons is not that different.