Electric Currents and Static Electricity

Which of the following is NOT a situation caused by static electricity?

• hair stands on end when touching a static electricity generator  
• you get a electric shock when touching a doorknob during dry winter 
• your hair stands on end when you are frightened
• clothes in the dryer cling to one another when no fabric softener is used 

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The transfer of what type of atomic particle is responsible for the static charges on objects?

• neutrons
• protons
• electrons
• none of these

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An object that is positively charged contains an excess of:

• protons
• neutrons
• electrons
• positrons

What types of charges attract?

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

The buildup of charges on an object is called:

• positive charge
• static charge
• negative charge
• static discharge

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NGSS.HS-PS2-4

Walking across a carpet is an example of charge being transferred by

• friction.
• induction.
• contact.
• static electricity

The difference between attract and repel is that to attract is to pull something closer and repel is to push something away.

• True
• False

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If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

• A positive charge.
• A negative charge.
• A neutral charge
• No charge at all

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NGSS.MS-PS2-5

Method of charging an object by allowing electric charge to flow by direct contact from one object to another object.

• friction
• conduction
• electric force
• induction

Ms Jo Jo rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

• The balloons will pop.
• The balloons will attract each other.
• The balloons will become positively (+) charged.
• The balloons will repel each other.

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