Electricity, magnetism, motor, generator REVIEW

All matter is made up of _______.

• elements

• atoms

• liquids

• charges

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2 objects with like charges will ________ each other. Ex. ++ or --

• attract to

• repel

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Objects can transfer ___________ by rubbing against one another.

• protons

• neutrons

• electrons

• atoms

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When atoms gain electrons they become _________ charged.

• positive

• negative

• neutral

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The electrons around the atom controls the ________ of the atom.

• charge

• nucleus

• protons

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Do opposite charges repel each other?

• NO

• YES

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NGSS.MS-PS2-3

The stack of magnets shown are able to hover over one another because they are like poles facing one another. (causing them to repel each other) - - and + +

• True

• False

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The diagram shows a motor. The number of coils of copper wire increases or decreases the strength of the motor.

If you need to decrease the motor strength you would _______ the number of coils.

• increase

• decrease

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

• opposite charges
• like charges

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Will the balloons ATTRACT or REPEL each other?

• 
• 

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