Ch. 3 Closed Circuits

Which of the following symbols represent a light bulb in a circuit diagram?

• 
• 
• 
• 

Which of the following objects is NOT an example of a conductor?

• Paper clip

• Pencil lead

• Wooden stick

• Aluminium foil

When a circuit is open, electricity is allowed to flow through.

• True

• False

What should we do when someone gets an electric shock?

• Check the victim's pulse

• Post it on social media and ask for help

• Separate the victim from the power source by using a metal stick

• Cut off the power source immediately

Wires are made of copper and they allow electricity to flow through. Wires are insulators.

• True

• False

Which of the following circuit diagrams is a closed circuit?

• 
• 
• 
• 

The microwave oven is damaged. What should we do?

• Read the manual and repair it ourselves

• Use it less frequently

• Ask a qualified technician to repair it

• Watch Youtube videos and repair it ourselves

Tags

NGSS.MS-PS3-3

What is the function of a switch in a circuit?

• To provide electricity

• To control the flow of electricity

• To prevent electric shocks

• To prevent the circuit being overloaded

We should turn off the electrical appliances that are not in use.

• True

• False

Tags

NGSS.MS-ESS3-3

What should we do to prevent electric shocks?

• Do not touch switches with wet hands

• Use tape to repair broken cables

• Avoid using 3-pin plugs

• Pull the cable when removing the plug