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Will the bulb light? Switches, gaps and complete circuits

4th grade (Year 5 in England) · 16 questions · Common Core: NGSS.4-PS3-2, NGSS.4-PS3-4 · England: KS2 Y4 Electricity

Name

Date

Score/ 16

  1. Question 1

    Look at the circuit. The switch is open. Will the bulb light?

    1.5 V1.5 V
    • A. yes, it lights
    • B. no, it stays off

  2. Question 2

    What does a switch do in a circuit?

    • A. It stores electricity.
    • B. It changes light into sound.
    • C. It opens or closes a gap to stop or start the current.
    • D. It makes the battery stronger.

  3. Question 3

    True or false? Closing a switch breaks the circuit.

    • A. True
    • B. False

  4. Question 4

    Look at the circuit. The switch is closed. Will the bulbs light?

    1.5 V
    • A. yes, it lights
    • B. no, it stays off

  5. Question 5

    What does a switch do in a circuit?

    • A. It makes the battery stronger.
    • B. It changes light into sound.
    • C. It stores electricity.
    • D. It opens or closes a gap to stop or start the current.

  6. Question 6

    True or false? Closing a switch breaks the circuit.

    • A. True
    • B. False

  7. Question 7

    Look at the circuit. The switch is open. Will the bulbs light?

    1.5 V1.5 V
    • A. yes, it lights
    • B. no, it stays off

  8. Question 8

    A bulb in a complete circuit does not light. Which is the most likely fault?

    • A. The wires are too colourful.
    • B. The bulb has blown or the battery is flat.
    • C. It is daytime.
    • D. The table is wooden.

  9. Question 9

    True or false? Closing a switch breaks the circuit.

    • A. True
    • B. False

  10. Question 10

    Look at the circuit. The switch is open. Will the bulb light?

    1.5 V
    • A. yes, it lights
    • B. no, it stays off

  11. Question 11

    A bulb in a complete circuit does not light. Which is the most likely fault?

    • A. The wires are too colourful.
    • B. The bulb has blown or the battery is flat.
    • C. The table is wooden.
    • D. It is daytime.

  12. Question 12

    True or false? An open switch leaves a gap in the circuit.

    • A. True
    • B. False

  13. Question 13

    Look at the circuit. The switch is closed. Will the bulbs light?

    1.5 V
    • A. yes, it lights
    • B. no, it stays off

  14. Question 14

    Two bulbs are in one loop with a switch. The switch is opened. What happens?

    • A. Both bulbs go out.
    • B. Both bulbs get brighter.
    • C. Nothing changes.
    • D. Only one bulb goes out.

  15. Question 15

    True or false? A plastic ruler can be used to close a circuit.

    • A. True
    • B. False

  16. Question 16

    Look at the circuit. The switch is open. Will the bulbs light?

    1.5 V
    • A. yes, it lights
    • B. no, it stays off

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Answer key: Will the bulb light? Switches, gaps and complete circuits

  1. 1. B. no, it stays off

  2. 2. C. It opens or closes a gap to stop or start the current.

  3. 3. B. False

  4. 4. A. yes, it lights

  5. 5. D. It opens or closes a gap to stop or start the current.

  6. 6. B. False

  7. 7. B. no, it stays off

  8. 8. B. The bulb has blown or the battery is flat.

  9. 9. B. False

  10. 10. B. no, it stays off

  11. 11. B. The bulb has blown or the battery is flat.

  12. 12. A. True

  13. 13. A. yes, it lights

  14. 14. A. Both bulbs go out.

  15. 15. B. False

  16. 16. B. no, it stays off