| 1. | Which one of the following is a good electrical insulator?
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| 2. | A neutral object becomes charged negatively if:
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| 3. | A neutral object becomes charged positively if:
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| 4. | An electric current occurs in a circuit when:
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| 5. | If a neutral plastic comb is run through your neutral hair:
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| 6. | After you run a plastic comb through your hair, your hair strands may repel each other because:
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| 7. | The bottom of a thundercloud is generally charged _____ and the top is generally charged _______.
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| 8. | Because of the charge that accumulates on the bottom of a thundercloud, the electrons in the ground below are repelled. This kind of charging over a distance is called:
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| 9. | Thunder is caused when a lightning bolt (discharge):
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| 10. | The process whereby electrons move from a charged object into the earth is most commonly called:
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