Electricity Review

Which material is a good conductor of electricity?

• Rubber

• Copper

• Glass

• Plastic

What must a circuit have for electricity to flow?

• An open switch

• A closed path

• Only one wire

• A plastic insulator

What is created when you rub a balloon on your hair?

• Static electricity

• Heat energy

• Light energy

• Sound energy

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Which of the following is an example of electrical energy being transformed into thermal energy?

• A fan spinning

• A light bulb getting hot

• A magnet attracting paper clips

• A radio playing music

What happens when an electric current flows through a wire?

• The wire becomes an insulator

• The wire creates a magnetic field

• The wire changes color

• The wire produces sound

Which of the following is an insulator?

• Aluminum

• Iron

• Wood

• Silver

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If a circuit is open, what will happen to the flow of electricity?

• It will flow faster

• It will stop

• It will flow in reverse

• It will create static electricity

Which action can generate static electricity?

• Placing a magnet near a wire

• Rubbing a plastic comb on wool

• Turning on a light switch

• Pouring water on metal

Which device transforms electrical energy into mechanical energy?

• Light bulb

• Electric fan

• Battery

• Magnet

What is produced around a wire when current flows through it?

• Heat only

• Light only

• Magnetic field

• Sound waves

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