Conductors/Insulators and Circuits

Which of the following materials is a good conductor of electricity?

• Rubber

• Copper

• Wood

• Plastic

What is the primary function of an insulator?

• To allow electricity to flow easily

• To prevent the flow of electricity

• To generate electricity

• To convert electricity into light

Which of the following is an example of a thermal insulator?

• Metal

• Glass

• Wool

• Water

Tags

NGSS.MS-PS3-3

What is a closed circuit?

• A circuit with an open switch

• A circuit with a broken path

• A complete path for electricity to flow

• A circuit with no power source

Which of the following is a component of a simple circuit?

• Battery

• Insulator

• Rubber band

• Glass

What happens when a circuit is open?

• Electricity flows continuously

• Electricity stops flowing

• Electricity flows faster

• Electricity changes direction

Which material is commonly used as an electrical insulator?

• Aluminum

• Plastic

• Silver

• Iron

What is the role of a switch in an electrical circuit?

• To increase voltage

• To open or close the circuit

• To store electrical energy

• To convert electricity to heat

Which of the following is a good conductor of thermal energy?

• Wood

• Air

• Metal

• Plastic

Tags

NGSS.MS-PS3-3

What is the purpose of a light bulb in a circuit?

• To store energy

• To convert electrical energy into light

• To insulate the circuit

• To increase resistance