Lesson Worksheet: How Switches Work Science
In this worksheet, we will practice describing how a switch works in a series circuit and identifying problems when using switches.
Q1:
Switches can be made from a variety of materials, including household objects. Which of these objects do you think would make a good homemade switch?
- APlastic spoon
- BMetal fork
- CWooden pencil
Q2:
Fill in the blank: When a switch is , electricity flows, turning components on.
- Aclosed
- Bopen
Q3:
What action can we take to make the bulb light up in the electrical circuit shown?
- AChange the batteries
- BCheck the wire
- CReplace the bulb
- DClose the switch
Q4:
Explain why the bulb in this electrical circuit is not working.
- ABecause wood is an electrical insulator
- BBecause wood is an electrical conductor
- CBecause the bulb is not connected to the circuit properly
- DBecause the batteries are not placed correctly
Q5:
Explain why the bulbs in this electrical circuit light up.
- ABecause the switch is closed, so electricity can flow to the bulbs
- BBecause the switch is open, so electricity can flow to the bulbs
Q6:
Look at the diagrams shown. In which of the circuits would the bulb light up?
- ACircuit A
- BCircuit B
Q7:
Identify the switch in the electrical circuit shown.
Q8:
Fill in the blank: A switch is a component of an electrical circuit that controls the of electricity to other components, turning them on and off.
- Aflow
- Bwire
- Cfield
Q9:
Which of these numbers identifies the power button on the TV remote shown?
Q10:
What is the arrow pointing to in this circuit?
- AThe batteries
- BThe light bulb
- CThe switch
- DThe wire
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