Electrostatics

Charging by contact results in both objects having the same charge.

• TRUE

• FALSE

• I DON'T KNOW

• I'M NOT SURE

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Transferring a charge without touching is ___

• Conduction

• Grounding

• Induction

• Polarization

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NGSS.MS-PS2-5

You rubbed a balloon to your hair several times, what is the charge of your hair after the action?

• Negative

• Positive

• Neutral

• None of the above

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NGSS.MS-PS2-3

For an object to have a positive charge, it must ____.

• lose electrons

• gain electrons

• gain protons

• lose proton

Like charges ___________________ and unlike charges ____________.

• attract, repel

• repel, attract

• neither repel nor attract

• either attract or repel

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

During a physics lab, a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that ...

• The plastic strip acquired extra protons from the cotton.

• The plastic strip acquired extra protons from the charging process

• Protons were created as the result of the charging process

• The plastic strip lost electrons to the cotton during the charging process

What is the end result of charging by friction?

• Both objects have the same charge, so they will attract one another.

• Both objects have the same charge, so they will repel one another.

• Both objects have the opposite charge, so they will attract one another.

• Both objects have the opposite charge, so they will repel one another.

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NGSS.MS-PS2-3

If two balloons have the same charge, what will happen if you place them close to each other?

• Nothing

• They will be attracted

• They will pop

• They will push each other away.

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

If a negatively charged rod touches a conductor, the conductor will be charged by what method?

• Friction

• Induction

• Conduction

• Convection

Select all that describe insulators.

• allow charges to flow easily

• do not allow charges to flow easily

• plastic

• metal

• surround a wire