Intro to Electricity

A material in which electrons are able to move easily

• Circuit
• Insulator 
• Resistance 
• Conductor 

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A material in which electrons are not able to move easily 

• Circuit 
• Insulator 
• Resistance 
• Conductor

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The process of transferring charge by touching or rubbing 

• Induction 
• Conduction 
• Friction 
• Conductor 

The rearrangement of electrons on a neutral object caused by a nearby charged object 

• Induction 
• Conduction 
• Friction 
• Conductor 

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

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Why can you get a shock if you touch a metal doorknob after walking across a wool carpet?

• You have gained electrons; the doorknob has no electrons.
• You have gained neutrons; the doorknob has fewer electrons.
• You have lost electrons; the doorknob has many electrons.
• You have gained electrons; the doorknob has many electrons.

Which of these causes electrically charged objects to attract or repel each other?

• An equal number of protons.
• An equal number of electrons.
• An unequal number of electrons.
• An unequal number of molecules.

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What charge does a proton have?

• negative (-)
• positive (+)
• neutral or no charge (0)

What charge does an electron have?

• negative (-)
• positive (+)
• neutral or no charge (0)

The law of electrical charges states that

• like charges attract and opposites repel
• like charges repel and opposites attract