Electricity

A particle that carries a negative electric charge is called a(n) ______.

• neutron
• atom
• proton
• electron

Tags

NGSS.MS-PS2-3

The potential difference that causes charges to move in a circuit is ___.

• voltage
• resistance
• current
• electric discharge

Which of these materials is a good conductor of electricity?

• Rubber

• Metal

• Newspaper

• Glass

Tags

NGSS.MS-PS2-3

The student conducted an experiment with circuits. Why was the bulb bright when he closed the switch?

• The switch produced an electric current

• Closing the switch broke the circuit

• Closing the switch completed the circuit

• The switch did not make a difference

How can it be explained that someone's hair can stick to a balloon?

• There is static electricity

• There is too much dust in the air

• A parallel circuit was too long

• The person needs to wash his hair

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A science class was completing an experiment on electrical circuits. Why did the bulb go out each time the switch was opened?

• Opening the switch broke the circuit

• The battery was probably going flat

• There was too much electricity flowing

• Opening the switch closed the circuit

Many electrical wires are wrapped with a plastic coating because plastic is -

• More dense than copper

• Able to keep its shape

• Less expensive than steel

• A good insulator

Electricity that flows in a closed path is called a

• path
• current
• circuit

A battery or other device which provides energy for a circuit

• Conductor
• Power source
• Parallel circuit
• Complete circuit

What is an insulator?

• The area of a conductor through which a current is able to move
• A material which does not allow electricity to go through it
• The amount of devices which are in a circuit
• A battery or other device which provides energy for a circuit