17.1 Static Electricity 1

A student rubs a plastic rod with a dry cloth, as shown in the diagram. The rod becomes negatively charged. The student moves the rod close to a suspended, charged rod. The two rods repel each other. Why?

• They have the same charge.

• They have opposite charges.

• They are both made of plastic.

• They are both insulators.

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• A

• B

• C

• D

-

• A

• B

• C

• D

What types of charges attract?

• Positive and Positive
• Positive and Neutral
• Negative and Neutral
• Positive and Negative

Static electricity is:

• electricity flowing in a wire
• the buildup of electric charges on an object
• when protons move between objects

The girl's hair and the comb are attracting  one another.  The hair and the comb have

• opposite charges
• like charges

Which of the following is an example of a conductor?

• plastic

• copper

• glass

• rubber

Will the balloons ATTRACT or REPEL each other?

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• 

Will the balloons ATTRACT or REPEL each other?

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•