SCI G.4 Sum

What object would best complete this circuit?

• a paper clip

• a pen

• a battery

• piece of plastic

A class prepared some electrical circuits using battery, connecting wires, and three light bulbs.  Which of these circuits can make the three bulbs light?

• A
• B
• C
• D

A student builds a circuit made up of a battery, two light bulbs, and a switch. What will the student most likely observe in this circuit?

• Light bulb 1 and light bulb 2 will both be on

• Light bulb 1 will be off, but light bulb 2 will be on

• Light bulb 1 and light bulb 2 will both be off

• Light bulb 1 will be on, but light bulb 2 will be off

Choose the correct sentence.

• This circuit will work because it is an open circuit.
• This circuit will work because it is a closed circuit.
• This circuit will NOT work because it is an open circuit.
• This circuit will NOT work because it is a closed circuit.

What is missing from this circuit? Why would the light bulbs be off?

• The battery, there is no power for the circuit to work.

• The switch is open, so the circuit is broken.

• The third light bulb, that is needed to complete the circuit.

• The wires are not connected properly.

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

Which of the following materials is an electrical conductor?

• Plastic spoon

• Silver-colored plastic spoon

• copper spoon

• wooden spoon

A material that does NOT let electricity pass through it is called ...

• An electrical conductor

• An electrical insulator

• An electrical source

• An electric appliance

What is a circuit that only has ONE path for electricity to flow?

• series circuit

• closed circuit

• parallel circuit

• light bulb

What is a circuit with several paths for electricity to flow?

• conductor

• series circuit

• parallel circuit

• open circuit