Grade 4Sciencequiz16 questions

Electric circuits

Grade 4: cell, wire, bulb, switch, a circuit must be complete, conductors and insulators, what a switch does, electricity safety.

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Questions

  1. Which part of a simple circuit gives the energy to make the bulb light?

    • The bulb
    • The cell
    • The switch
    • The wire
    Show answerThe cell

  2. What is the job of the wires in a circuit?

    • They carry electricity around
    • They make the light
    • They store sunlight
    • They turn the bulb off
    Show answerThey carry electricity around

  3. Which part of a circuit gives out light?

    • The bulb
    • The cell
    • The switch
    • The wire
    Show answerThe bulb

  4. Which part of a circuit can you press or flick by hand?

    • A bulb
    • A cell
    • A switch
    • A wire
    Show answerA switch

  5. A bulb is connected to a cell, but there is a gap in the wire. What happens?

    • The bulb does not light
    • The bulb flickers forever
    • The bulb lights brightly
    • The cell gets bigger
    Show answerThe bulb does not light

  6. A circuit must be a complete loop for electricity to flow. (True or false?)

    Show answerTrue

  7. Which material is a good electrical conductor?

    • Copper
    • Plastic
    • Rubber
    • Wood
    Show answerCopper

  8. Which material is an electrical insulator?

    • Aluminium foil
    • Copper
    • Iron
    • Rubber
    Show answerRubber

  9. Why are electric wires covered in plastic?

    • Plastic is a conductor, so it speeds up electricity
    • Plastic is an insulator, so it keeps us safe
    • Plastic makes the electricity stronger
    • Plastic makes the wire shine and look nice
    Show answerPlastic is an insulator, so it keeps us safe

  10. When a switch is closed, the circuit is complete and the bulb can light. (True or false?)

    Show answerTrue

  11. What does a switch do in a circuit?

    • It lights the bulb itself
    • It makes more electricity
    • It opens or closes a gap in the circuit
    • It stores electricity
    Show answerIt opens or closes a gap in the circuit

  12. What word describes a circuit when its switch is off? (Answer out loud)

    Show answerOpen (a broken circuit)

  13. It is safe to put a metal object into a wall socket. (True or false?)

    Show answerFalse

  14. Why should you never touch electrical sockets with wet hands?

    • Water can let electricity pass through
    • Water makes electricity stop
    • Water makes sockets quieter
    • Water makes the socket cold
    Show answerWater can let electricity pass through

  15. Name one metal that is a good conductor of electricity. (Answer out loud)

    Show answerCopper (also iron, aluminium, silver)

  16. Name one electricity safety rule for children. (Answer out loud)

    Show answerAny: don't touch sockets, keep water away, don't touch power lines, don't pull plugs by the wire

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