10-20-4th Bell Work

A great conductor of energy is:

• plastic

• metal

• cloth

• wood

A fifth grade class constructed this circuit.  Which of these objects most likely made the light glow when connected to points X and Y?

• plastic straw
• cotton string
• aluminum foil
• rubber eraser

Which of the following materials is an electrical conductor?

• Plastic spoon

• metal spoon

• wooden spoon

Which of the following can work as an energy source?

• Lightbulb

• Switch

• Wire

• Battery

Which is a good conductor?

• Rubber eraser

• Toothpick

• Copper Penny

• Cotton

Which object is an insulator?

• Cotton

• Copper

• Aluminum

• Foil

When a circuit is open, the circuit is _________?

• On

• Off

In the picture, if you replace the paper clip with a plastic spoon, what happens? 

• The bulb doesn't light
• The bulb is dimmer
• The wires get hot
• There is no charge

Why is electrical wiring usually made from copper?

• Because copper is shiny

• Because copper conducts electricity

• Because copper is not magnetic

• Because copper insulate electricity

Why is electrical wiring usually are covered with a layer of plastic?

• Plastic is a conductor

• To help electricity flow along the wire

• Plastic is an insulator

• To add more energy