Electrostatics

Electric forces can be either attractive or repulsive. In contrast, gravitational force is:

• Only attractive.

• Only repulsive.

• Both attractive and repulsive.

• Neither attractive nor repulsive.

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An object with a positive charge would ______ an object with a neutral charge

• Attract

• Repel

• Do nothing.

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NGSS.HS-PS2-4

What does it mean for an atom to be neutral?

• It has no charge.
• It has neutrons.
• It isn't attracted to other atoms.
• It has no net charge.

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Both insulators and conductors can be permanently charged by:

• Conduction

• Induction

• Polarization

Unlike insulators, conductors can be permanently charged by:

• Induction

• Conduction

• Polarization

Compared to insulators, metals are better conductors of electricity because metals contain more free

• protons

• electrons

• neutrons

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NGSS.HS-PS3-5

A material in which electrons are able to move easily

• Circuit
• Insulator 
• Resistance 
• Conductor 

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NGSS.HS-PS2-5

Protons move around and make materials more positive

• True 
• False

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NGSS.MS-PS2-3

After you rub a balloon on your hair, the balloon has a negative charge. What charge does your hair have?

• Positive
• Negative
• Neutral

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NGSS.HS-PS2-4

NGSS.HS-PS3-5

What variables affect the magnitude of the electric force between two objects with charge?

• charge of the first object

• charge of the second object

• distance between the charges

• all of the answers

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NGSS.HS-PS2-4