Principles of Electricity

Charge is caused when objects are rubbed together and _______________ are knocked off.

• Protons
• Neutrons
• Electrons
• Positrons

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Metals are good ______________.

• Conductors
• Insulators

Rubber is a good ______________.

• Conductor
• Insulator

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Electrical _____________ transfer charge easily

• Conductors
• Insulators
• Polarizers

Current is the ...

• pressure of electricity 
• flow of electricity
• tendency of a material to resist the flow of electricity.
• total power

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The tendency of a material to resist the flow of electricity is measured in.

• volts
• amps
• ohms
• watts

A conductor is a

• material that does not allow electrons to flow easily.
• material that allows electrons to flow easily.
• device the detects an electric charge.
• device the changes voltage.

Which of the charges below will attract each other

• [Positive]  [Positive]
• [Negative]  [Negative]
• [Positive]  [Negative]
• All of the Above

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NGSS.MS-PS2-3

A circuit with two or more branches is a __________ circuit

• series
• parallel

How many paths does a series circuit have for electricity to follow?

• one
• two
• three
• two or more