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4th grade electricity and magnetism

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

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  1. Question 1

    Which is the safest thing to do if an appliance's cable is frayed?

    • A. Keep using it carefully.
    • B. Wrap it in wet paper.
    • C. Pull the wires apart.
    • D. Stop using it and tell an adult.

  2. Question 2

    True or false? Overloading one socket with many plugs is a good idea.

    • A. True
    • B. False

  3. Question 3

    Does this usually run on mains electricity or batteries: toaster?

    • A. mains electricity (plugged into the wall)
    • B. batteries (cells)

  4. Question 4

    Why is a metal paperclip often used to make a simple homemade switch?

    • A. Metal is an insulator.
    • B. Metal is an electrical conductor, so it can complete the circuit.
    • C. Paperclips store energy.
    • D. It looks nicer.

  5. Question 5

    True or false? A bulb only lights in a complete circuit.

    • A. True
    • B. False

  6. Question 6

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

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

  7. Question 7

    Which is the safest thing to do if an appliance's cable is frayed?

    • A. Stop using it and tell an adult.
    • B. Keep using it carefully.
    • C. Pull the wires apart.
    • D. Wrap it in wet paper.

  8. Question 8

    True or false? Mains electricity can kill, so it must be treated with care.

    • A. True
    • B. False

  9. Question 9

    Does this usually run on mains electricity or batteries: wristwatch?

    • A. mains electricity (plugged into the wall)
    • B. batteries (cells)

  10. Question 10

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

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

  11. Question 11

    True or false? Metals are good electrical conductors.

    • A. True
    • B. False

  12. Question 12

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

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

  13. Question 13

    Why should you never touch switches or plugs with wet hands?

    • A. Water can conduct electricity into your body.
    • B. It makes the light dimmer.
    • C. Wet hands are too slippery to press.
    • D. Water makes plugs rusty instantly.

  14. Question 14

    True or false? Overloading one socket with many plugs is a good idea.

    • A. True
    • B. False

  15. Question 15

    Does this usually run on mains electricity or batteries: calculator?

    • A. mains electricity (plugged into the wall)
    • B. batteries (cells)

  16. Question 16

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

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

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Answer key: 4th grade electricity and magnetism

  1. 1. D. Stop using it and tell an adult.

  2. 2. B. False

  3. 3. A. mains electricity (plugged into the wall)

  4. 4. B. Metal is an electrical conductor, so it can complete the circuit.

  5. 5. A. True

  6. 6. B. no, it stays off

  7. 7. A. Stop using it and tell an adult.

  8. 8. A. True

  9. 9. B. batteries (cells)

  10. 10. D. Both bulbs go out.

  11. 11. A. True

  12. 12. A. yes, it lights

  13. 13. A. Water can conduct electricity into your body.

  14. 14. B. False

  15. 15. B. batteries (cells)

  16. 16. D. Both bulbs go out.