Electrical Energy

The illustration shows an electrical circuit. The circuit has a lightbulb, a battery, a wire, and a switch.

Which of the following is the role of the wire in the circuit?

• Carrying electrical energy to the lightbulb

• Producing energy for the lightbulb

• Changing the electrical energy into light energy

• Turning the lightbulb on and off

Tags

NGSS.4-PS3-2

Which item, when placed in the gap below would allow the light bulb to turn on?

• Plastic Comb

• Metal Paper Clip

• Wooden Toothpick

• Rubber Ball

Which of the items listed is an electrical insulator?

• Rubber Band

• Penny

• Aluminum Nail

• Paperclip

The picture shows an electrical cord used on a new toaster. Why is the cord made of both plastic and copper?

• The plastic is a conductor and the copper is an insulator of electricity.

• The plastic and the copper are both conductors of electricity.

• The plastic is an insulator and the copper is a conductor of electricity

• The plastic and the copper are both insulators of electricity.

Tags

NGSS.MS-ETS1-1

Which one of the items is an electrical conductor?

• Rubber band

• Steel Fork

• Wooden Stick

• Piece of string

Below is an incomplete circuit.

How could a student make this a complete circuit?

• Add a battery

• Open the switch

• Close the switch

• Decrease the length of the wire

What is true about a conductor?

• It allows electricity to flow through it easily.

• It does NOT allow electricity to flow through it easily.

What is a closed circuit?

• A circuit where electricity is NOT flowing through it.

• A circuit where electricity is flowing through it.

piece of yarn

wooden stick

rubber band

All the items listed above are...

• Electrical Conductors

• Electrical Insulators

What is an open circuit?

• A circuit where electricity is NOT flowing through it.

• A circuit where electricity is flowing through it.