Unit 3 Science Lab

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Science lab-Building an electroscope

Observations:

Discussion questions:

1. The charge on the electroscope was positive. It was positive because the rod used had a negative charge and the charge on the electroscope for induction is always opposite to the rod.

2. The charge on the electroscope was negative. It was negative because the rod used had a negative charge and the charge on the electroscope for conduction is always the same charge as the rod.

4. Charging an ebonite rod with fur and charge the electroscope using conduction

1). Charge the ebonite rod with fur

2). Touch the negative ebonite rod to the electroscope which will give the leaves a negative charge using charge separation which will make the leaves repel.
3). Remove the rod which will return the electroscope to neutral.

5. The leaves of the electroscope moved in the lab because the same charge were in each leave so the same charges repelled which made the leaves move …show more content…
We use a plastic cup to surround the leaves of the electroscope because the material plastic is an insulating material so no additional charges besides the intended charge will interfere with the electroscope.

7. We use dryer sheets in the dryer. Dryer sheets prevent the different fabrics in the dryer to exchange electrons and attract. Dryer sheets contain positively charged ingredients that are released by the heat and tumbling motion of the dryer they bond with negatively charged fabric to neutralize them so they wont have a strong urge to attract to other fabrics.

8. That static noise is called electric discharge. Aircrafts get rid of this static noise by static discharge wicks, which in a way ground the charge to help the pilots reach the destination.

9. The fire started because of the transfer of electrons from her body to the gas nozzle. In the car some electrons travelled from her clothes to the car. Suzy still had a negative charge and from the massive charge she had the gas mixed with oxygen and started a
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