Simple Circuits

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

• To make it look pretty

• To help electricity flow along the wire

• To make it safe

• To add more energy

Tags

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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

This circuit is .....?

• open
• parallel
• closed
• shows the flow of electricity

When all parts of the circuit are connected, it is a ______ circuit. 

• open
• closed

When you flip a light switch on and off you are closing and opening a circuit.

• true
• false

What is a switch's function in a circuit?

• to make the current hotter or colder
• turn on and off the flow of electrical current
• the pathway that electrical current flows
• to add more power to the circuit

Which of these best completes the circuit?

• rubber band
• metal nail
• leather shoelace
• wooden toothpick

Tags

NGSS.MS-ETS1-2

Which light will be brighter and why?

• Bulb A because its circuit is closed
• Bulb B because its circuit is closed
• Bulb B because it has more volts
• Bulb A because it has less volts

Look at the picture.  Why won't the light bulb light up?

• The wires from the light bulb are not connected to the battery
• The switch is not closed to form a complete circuit 
• The wires from the light bulb are not connected to the switch 
• The wires from the battery are not connected to the switch 

Look at the picture.  What causes the light bulb not to light up?

• The wires from the second light bulb are not connected to the battery
• The wires are not connected between the light bulbs 
• The wires are not connected to both sides of the first light bulb
• The wires are too long to complete the circuit 

Tags

NGSS.MS-ETS1-2

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